一、词汇运用
1. Read the ____________ (用法说明) carefully before you use the app to make a short video.
2. The teacher always puts red ____________ (标记) next to the wrong answers.
3. Clean the ____________ (画笔) after painting in time. They are difficult to clean after the paint dries.
4. The teacher wrote on the blackboard with a piece of ____________ (粉笔).
5. It is ____________ (寻常的) to start a conversation with the subject of the weather.
6. It's terrible that many teenagers are ____________ (迷恋的) about watching short videos.
7. Robots can do ____________ (danger) work for humans.
8. It started raining right after I hung my clothes outside. How ____________ (luck)!

instructions
; marks
; brushes
; chalk
; usual
; crazy
; dangerous
; unlucky

二、根据句意，在所给词的前面加上正确的前缀
1. It's ______ (possible) for us to finish the work within hours.
2. He stopped walking at the crossing, ______ (sure) about which road to choose.
3. If someone doesn't show good manners（举止）to others, he is ______ (polite).
4. The shopkeeper gave me an ______ (friendly) look when I wanted to try on a third pair of jeans.
5. Don't believe him. What he told you is ______ (correct).
6. It's ______ (usual) to see snow in June. It's usually hot.
7. — Would you like to eat some fried chicken?
— No, thanks. I think it tastes delicious but is ______ (healthy).
8. My homework is ______ (complete) because I forgot to do the last two Maths problems.

impossible
; unsure
; impolite
; unfriendly
; incorrect
; unusual
; unhealthy
; incomplete

( ) 1. — Could you tell me how to book a ticket to the Summer Palace?
— Well, just follow the ______ on the website.
A. information
B. attention
C. inventions
D. instructions

D

( ) 2. — When do you think is the best time to visit Yili?
— You ______ go there in May. You can see the green grasslands and snow mountains at the same time.
A. have to
B. must
C. had better
D. would like

C

( ) 3. We can put "un" before the following words to give them the opposite（相反的）meaning except（除了）"______".
A. able
B. comfortable
C. important
D. active

D

( ) 4. — Don't forget your umbrella! — ______.
A. Yes, I do
B. No, I won't
C. Sorry, I can't
D. That's right

B

( ) 5. — I don't care what people think.
— Well, you ______. Some ideas are worth listening to.
A. should
B. may
C. can
D. will

A

( ) 6. The policeman found ______ in the house, so he left at last.
A. anything unusual B. unusual nothing C. nothing unusual D. something unusual

C

( ) 7. — Why not ask Ellen to join in our game?
— ____________. She's preparing for an important speech tomorrow.
A. Of course not
B. I'm afraid so
C. I don't think so
D. You'd better not

D