用所给单词的适当形式填空

It was very difficult ____ (build) the railroad.

用所给单词的适当形式填空

Zhan Tianyou ____ (die) at the age of 58.

用所给单词的适当形式填空

She ____ (travel) to India and worked as a teacher.

用所给单词的适当形式填空

When did he ____ (return) to the ground?

用所给单词的适当形式填空

He had a space meal and ____ (rest)for three hours.

用所给单词的适当形式填空

Yang Liwei ____ (train)for five years.

用所给单词的适当形式填空

China now is the ____ (three)country to send a person into space.

用所给单词的适当形式填空

用所给词的适当形式填空

After he ________ (count) the students, he told us the number.

用所给词的适当形式填空

He chose the ________ (big) cake of all.