I went there in 1984, and that was the merely occasion when I ________ the journey in exactly two days.

Many butterflies are still ____ after the long winter days. Now the forest is ____.

Qian Xuesen devoted all his life to ________________China’s Space Program.

Is there any possible way to help them get rid of such a bad habit?—To tell the truth, it’s very hardBut we ________ on this problem, trying to improve the situation

.-How is your grandma –She’s fine. She used to___TV at home after supper. But now she is used to______ out for a walk.