He was late_______ he missed the early bus．
A. because of B. because C. since D. so
My mother_______ if she ________her work this week．
A. comes back；finishes
B. comes back；will finish
C. will come back；finishes
D. will come back；will finish
They didn’t arrive here on time_______the heavy rain．
A. because B. because of C. so D. as
If the phone_______，can you answer it?
A. rings B. is ringing C. will ring D. rang
When did Xi Wang start_______after_______?
A. to look：her B. 1ook；herself C. to look：herself D. 1ook；her
_________did the baby pandas look like?
A. How B. What C. Where D. When
