His father knew little about the secret __________ I told him the other day .
A. when B. after C. until D. while
He climbed up the ladder __________ the wall and went into the room __________ the open window.
A. through； against B. against； through
C. against； against D. through； through
The boy refused ____________ so many strange questions.
A. to answer B. answering C. answer D. answered
---The couple _______ abroad recently. They’ll return home in 3 days.
---What great fun! But I _______ my hometown since I worked.
A. have been； have never left
B. have gone； have never left
C. have been； have been away from
D have gone； have been away from
Lei Yang can’t help _______________ the room because he is busy with his work.
A. cleaning B. cleaned
C. to clean D. be cleaning
--- You are late again. The class _______________ for five minutes.
--- Sorry. There’s something wrong with my bike.
A. began B. has begun
C. was on D. has been on
