By the end of the last month, I _____________ all the CDs of Justin Bieber.

By the end of the last month, I _____________ all the CDs of Justin Bieber.

#41903

collect

collected

have collected

had collected

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If tomorrow______________ fine, we’ll grow the flowers.

#41990

will be

is going to be

I                       to Shanghai three times.

#37406

have gone

have been

went

was

Don’t talk. Your brother _______.

#40133

sleeping

sleeps

sleep

is sleeping

 By the time I got home, Gina and her sister ______ their project already.

#40028

finished

have finished

had finished

will finish

I can’t tell when that house 　　　　 exactly, but it must be very long ago.

#39139

is built

will build

was built

has built

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