---I have trouble _____ my new computer.-----Don’t worry. I’ll show you how ____it.
—Huang Wei rides a bike very well. Who taught him? —No one. He taught _________.
— What a heavy rain! Will it last long? — ______ . We are getting into the raining season now.
— We finished counting all the birds, Miss Zhang. — ______ ! Boys and girls, let’s have a rest.
“The children are playing in the park.”The main structure of the sentence is ______ .
— Don’t forget ______ your homework before going out to play basketball, John. — OK, Dad.