—The light in his room is still on.Do you know________?—In order to prepare for the coming exam.
Hurry up,________ you’ll be late. A.and B.so C.or
He wants to join the ________ club.He can ________ chess.
I can ________ Chinese kung fu.
Do you have a pen?I want to ________ a letter.
Ann often helps me ________ math after school.