Do you know how to use the computer?—Sorry, I don’t. Why ______ ask the teacher ______ help? [ ]

I don’t think you study _________. You should study _____

Many people who had seen the film were afraid to go to the forest when they remembered the scenes__________people were eaten by the tiger.

Here___ ___number of people. ___ number of them___fifty.

On April 12, 1961，_____27—year—old Yuri Gagarin(尤里.加加林)became the first human to go into_____ space.