（ ）13.（2022南通）— Miss Hu, I haven’t seen you for a long time.
— Yes. I ________ as a volunteer nurse in Shanghai for a month. I came back yesterday.
A. worked B. am working C. have worked D. work

A

（ ）14.（2024安徽）— Excuse me, may I use your dictionary? I ________ mine behind.
— Sure. Here you are.
A. leave B. have left C. will leave D. was leaving

C

（ ）15.（2024临夏）Mr Green ________ China for five years.
A. has been to B. has gone to C. has been in D. has come to

A

（ ）16.（2024遂宁）— I have passed the exam. Thanks for your help.
— ________.
A. It’s my pleasure B. With pleasure C. All right D. Never mind

A

（ ）17.（2023淮安）— Would you mind showing me how to enter the computer system?
— ________. Just click here.
A. Sure B. Of course not C. That’s right D. I hope so

B

1.（2023南通）He likes staying in the room because he ____________ （paint）the walls blue, a calm and peaceful colour.

has painted

2.（2023无锡）China’s Shenzhou ⅩⅤ astronauts ____________ （take）a 7 - hour - long spacewalk in February, 2023.

took

3.（2022无锡）Fan Jinshi ____________ （do）a lot to protect Dunhuang culture for many years.

has done

4.（2023大连）Scientists are trying to find life on Mars but they ____________ （not find）anything yet.

haven't found

从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项（2023内江改编）
It’s not a secret that there are some bad people on the Internet. 1.________ So it is necessary to pay much attention（注意）to Internet safety. However, staying safe online doesn’t ask you to turn your Internet off. 2.________
●Check the links（链接）carefully.
You may often receive unknown links when you check your emails or read online. Before clicking them, you should make sure they are safe. 3.________ First, put the mouse over it and the full link will appear（出现）near the mouse. Then you can compare（比较）this link with the official（官方的）website. If they are the same, the link is safe.
●Avoid（避免）sharing your personal（私人的）information.
4.________ The information includes your family information, bank information, and the password（密码）to your social media. You should also know that anything you post on social media may continue to be there online for a long time. So, be careful about anything you post on the Internet.
●5.________
If a public Wi - Fi doesn’t have a password, it is possibly unsafe. Don’t use such a Wi - Fi. When you have to use one, avoid entering in any personal information.
A. Remember to use a safe public Wi - Fi.
B. They try to get your money or information.
C. There’s a good way to tell if a link is safe.
D. Don’t spend too much time on the Internet.
E. It is very important for you to keep the password safe.
F. You should never tell others your own information online.
G. The following advice will help you avoid danger on the Internet.

1-5 BGCFA