----- How about the book you are reading now? ----- Excellent indeed. You can find many problems we have come across _____ in it.
#103288
A
covered
B
covering
C
are referred
D
referred
推荐题目
Experts suggest that teenagers spend at least 30 minutes exercising, five times a week. Walking and riding your bike _____ , and ______.
#103295
A
counts; so are school sports
B
count; school sports count, either
C
count; so do school sports
D
counts; so school sports do
I _____ his telephone number. Had I known it, I would have rung him up.
#100016
A
don’t known
B
didn’t know
C
hadn’t known
D
haven’t known
 He _____the job well, but he ____so careless.
#104340
A
had done; had been
B
could do; was
C
could have done; was
D
hadn’t done; had been