题目

1,He_____(work) in China for five years.2,I _____(read) that book for three times.
1,He_____(work) in China for five years.
2,I _____(read) that book for three times.
3,My mother often asks me _____(go) to bed.
4,So far we _____(learn) about eight hundred English words.
5,It,s important for him______(work) on their farm.
6,Alice had nothing _____(do).
7,She _____(be) a studengt for six years.

提问时间：2020-10-31

答案

have worked
have read
to go
have learned
to work
to do
has been