Swimming alone ____ be ____ dangerous. Do be careful.
#89464
A
need, highly
B
may, high
C
can; highly
D
can; high
推荐题目
-----I thought I ______something burning  . -----Really?
#89834
A
smelled
B
was smelling
C
could smell
D
might smell
—How was your trip to London?—Great. I was helped by an organization. Otherwise, I ______ it.
#87221
A
wouldn’t afford
B
hadn’t afforded
C
wouldn’t have afforded
D
needn’t have afforded