一、根据首字母补全单词,完成句子。
1. Her voice sounds s______.
2. I hope I have a good m______ so that I can remember things quickly.
3. Tom is an h______ boy. He never tells a lie.
4. C______ the answers before handing in your homework.
5. I've had this bike f______ three years.

【解析】：
这是一道英语填空题，需要根据句子的语境和首字母提示，补全单词使句子意思完整。这类题目主要考查学生的词汇量、语境理解能力以及单词拼写能力。
1. 第一个句子描述的是“她的声音听起来很_____”，根据首字母“s”和语境，可以推断出应该填写描述声音特性的形容词，如“sweet”（甜美的）。
2. 第二个句子表达的是“我希望我有一个好的_____，这样我就能快速记住事情”，根据首字母“m”和语境，可以推断出应该填写与记忆力相关的名词，如“memory”（记忆力）。
3. 第三个句子描述的是“汤姆是一个_____的男孩，他从不撒谎”，根据首字母“h”和语境，可以推断出应该填写描述人品质的形容词，如“honest”（诚实的）。
4. 第四个句子是一个祈使句，“在交作业之前_____答案”，根据首字母“C”和语境，可以推断出应该填写与检查相关的动词，且以大写字母开头，如“Check”（检查）。
5. 第五个句子表达的是“我已经有这辆自行车_____三年了”，根据首字母“f”和语境，可以推断出应该填写表示时间段的介词，如“for”。
【答案】：
1. sweet
2. memory
3. honest
4. Check
5. for

二、用方框中所给单词的适当形式填空。
weigh, hard, sight, prefer, pull
1. The doctor ______ out one of my bad teeth.
2. It is about 76 kilos in ______.
3. Tom said he ______ staying at home to watching such a bad match.
4. The ______ of the mountain are very beautiful.
5. He looked carefully at the blackboard but could ______ see anything.

1. pulled 2. weight 3. preferred 4. sights 5. hardly

三、改正下列句子中画线部分的错误。
1. The old man has died for three years. 改为：______
2. He has left for three hours. 改为：______
3. The film has begun for three minutes. 改为：______
4. I have bought the bike for three years. 改为：______
5. The shop has opened for three years. 改为：______

1. has been dead 2. has been away 3. has been on 4. have had 5. has been open

四、将下列句子转化为现在完成时态。
1. I knew him last year.
I ______
2. He began to make model planes when he was seven.
He ______
3. They moved here in 1993. (live)
They ______
4. Bill began to talk on the phone five minutes ago.
Bill ______
5. My sister is playing with her dolls. (three hours)
My sister ______

1. have known him since last year.
2. has been making model planes since he was seven.
3. have lived here since 1993.
4. has been talking on the phone for five minutes.
5. has been playing with her dolls for three hours.