Theresomething wrong with our new printer. It broke down twice in the past week.
A. could be
B. must be
C. is
D. are
There to be any problem with the office rule. Everyone agrees to it.
A. doesn’t seem
B. don’t seem
C. seems
D. seem
There isfinding his office. It's just next to the elevator.
A. some difficulty
B. no difficulty
C. much difficulty
D. many difficulties
Therefewer accidents if all staff follow the safety rules.
A. could be
B. seem
C. seems to be
D. appear to be
微信支付 
支付宝支付