3. 過馬路時一定要注意車輛。

Do     vehicles when you cross the street.

2. 砟晚這家旅館發(fā)生了火災(zāi)。

      in this hotel last night.

1.振作起來吧！你的困難不久就會過去的。

   ! Your troubles will soon be over.

5. It's possible . he hasn’ t received the letter. 

4. John will arrive is unknown. Maybe two hours later.

3. we’ 11 do is leave a note for Mum to tell her we won’ t be back till late.

2. It doesn't matter it turns out to be a good idea or a bad idea.

用適當(dāng)?shù)倪B接詞填空。

1. will be sent to carry out the task hasn't been settled.

II.下面各句均有一處錯誤，請找出并改正。

2. If they will go there or not to try another experiment hasn’t been decided. 

3. Why caused dinosaurs to disappear from the earth is still a puzzle.

4. What we lived ten years ago had changed so much that I nearly lost my way while visiting there. 

5. My son was a quiet and (溫和的) man who liked sports and enjoyed life.