Thanks your help.A、to B、at C、for
—I ________ speak English in class because I’m afraid of making mistakes. —Don’t be shy. Believe in yourself and everything will be OK.
“I hope you _______ come and see me soon” said Grandma Li to her son.
— Look at the boy playing basketball on the ground. Is it George? — It ________ be him. He told me he would play basketball after class, but he’s not sure.
–Look! A man is cutting a tree on the moon. --It ______ be true. The teacher said there is no air on the moon.
----Must I finish the work today, Mom? ----No, you _______________. You can finish it tomorrow.