—Do you like this kind of fruit?

—Yes. It ________ plenty of vitamin C and B.

[　　]

The World Trade Center fell down ________ many people had time to escape from it .

[　　]

—When did you receive his e-mail?

—It is ________ yours.

[　　]

I was thinking about playing football after school when my teacher called ________ me to answer a question.

[　　]

Only after ________ reached 18 ________ join the army.

[　　]

Along the other side of the river ________ a row of wooden houses, which ________ built in the 1950's .

[　　]

There's no doubt ________ he can do a good job of it.

[　　]

—How does your business go wrong?

—But I have done all that is ________ by law.

[　　]

Mr. Wang gave me the textbooks to all the pupils except ________ who had already taken them.

[　　]

—It rained nonstop yesterday.

—Yes. We ________ a worse day for the picnic.

[　　]