-Mr. Smith, how can I get a good grade in the monthly test?-You’d better ______all the questions before you start to answer them.
You can come to see me ________ you like.
Many ________ are helping look for the lost boy.
The book belongs ________ Tim.
We went to Hainan Island on May Day and had great fun ________ in the sea.
Our English teacher is very strict _____us and he is strict_______his teaching.