Fill in the blank with the right form of the verb.

We ________ our picnic on the grass when suddenly it began to rain. (have)

Fill in the blank with the right form of the verb.

A burglar who ________ into the house drank three bottles of champagne and was arrested when he was still asleep. (break)

Fill in the blank with the right form of the verb.

Jane's ambition is ________ a successful doctor. (become)

Fill in the blank with the right form of the verb.

Mr.Li is a very rich man who lives alone and enjoys ________ coins. (collect)

Fill in the blanks with the words in their proper forms.

Fill in the blanks with the words in their proper forms.

Prison is a place for punishing the ________ (crime).

Fill in the blanks with the words in their proper forms.

________, they've bought a new car. (recent)

Fill in the blanks with the words in their proper forms.

The ________ of his house costs forty pounds a year. (insure)

词形变换。

词形变换。