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couldn’t shouldn’t be mustn’t have been oughtn’t to have been
will teach would teach has taught will be teaching
isn’t have isn’t going to be isn’t have aren’t
is going to be is going to have has had
not be not to be be not be not to
he must to teach a class he will be teaching a class he will teach a class he will have teaching a class
couldn’t be shouldn’t be mustn’t have been oughtn’t to have been
will teach would teach has taught will be teaching
be; be have; have be; have have; be
I.’m afraid not I think so Yes, I hope so I.’m afraid so
when did their class meeting begin. where their class meeting was held how often their class meeting is held how long their class meeting will last
would have class will be having class was going to have class am about to have class
/; / the; the a; / the; a
is going to be is going to have has had
turned up turned out reached turned over
that; It this; This this; It that; This
when our class meeting would begin when would our class meeting begin when our class meeting will begin when will our class meeting begin
be; be have; have be; have have; be
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