You should have put the meat into the fridge. I think it ________ inedible by now.
A. becomes
B. has become
C. became
D. has been becoming
查看答案
After looking for his pen for half an hour, John realizes that it ________ on the table all the time.
A. has been lying
B. had been lying
C. was lying
D. has lain
She ought to have a rest; she ________ the book too long.
A. is reading
B. had read
C. has been reading
D. reads
Two of the glasses were broken when they ________.
A. were washed
B. washed
C. have been washing
D. were being washed
It seems that it ________ for some time.
A. snowed
B. is snowing
C. snows
D. has been snowing
微信支付 
支付宝支付