1. I saw some smoke __ ___ ________.

2. He is standing __ ___ ____ __ the cliff.

3. We should brush our teeth __ ____ twice a day.

4. I really ___ __ ____ ___ __ bungee jumping. gkstkgkstkgkstk]

5. They should ___ ___ banks in broad daylight!

自练自提

单句语法填空

1. Although the old man was _______________ the edge of death, he still fought with the disease bravely.

2. The house, _________________(surround) with woods , is in beautiful ________________(surround)

3. ----- What kind of job are you taking?

----- My major job is to trade ______________computers.

4. To their relief , their students ________________ (narrow) escaped from the shaking building.

5. The country has gone ________________ many wars and people there have suffered a lot.

6. There are a great number of natural resources in the valley, which remain to be _____________(exploit)