Erna Hart _______ a good swimmer; she swam across the English Channel when she was only fourteen years old!
A. must be
B. must have been
C. could be
D. should have been
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- Did you have any difficulty finding our company？ --____________.
A. Yeah. It' s freally too hard.
B. How far it is.
C. No. it' s easy to get here by subway.
D. It' s too time-consuming.
" The days are getting longer." " Spring_______."
A. must come
B. must be come
C. is having to come
D. must be coming
Lao Lin has been working in the countryside for a long time, so he _______ farm work.
A. used to
B. is used to
C. use
D. use to
– I’m sorry for my mistake. -- ________________.
A. It doesn’t matter.
B. Thank you.
C. I apologize.
D. Sure.
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