Without his assistance, I ________ the research last month.
A: would not have completed
B; could not finish
C; should not finish
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_______ tomorrow's lessons, Frank has no time to go out with his friends.
A: Not to prepare
B; Not having prepared
C; Not preparing
—It's about a successful businessman's management experience, isn't it?
— ____________
A: My pleasure!
B; That's right!
C; It's up to you!
The young ______ interested in pop music.
A: is
B; are
C; have
— Is it going to be warm next week?
— _________________.
A: Yes, it is
B; I don't believe it
C; No, it hasn't