—Do you practice how to escape from dangers every term?—Of course. Our school pays much attention to the ______ of safety.
I study math by ____ lots of exercises. A.did B.doing C.Do
Reading aloud is a good way______ English.
Look! There are some boys ______soccer there.
_____ do you use the Internet a week? Twice.
Tom studies ______. He _____ plays with his friends.