[ Vocabulary & Grammar ]
Some insects are able to blend in with their ____________ so that they won’t be caught easily.
A. consumers
B. products
C. substances
D. surroundings

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Grammar › View …….Sun rises in the east and sets in the west.
A. A
B. An
C. The
D. Nothing
Grammar › View
No, calling Mr. Smith at two o’clock in the morning _________ a good idea.
a. might be
b. might not be
Grammar › ViewShe and I…… each other since we were in secondary school.
A. know
B. knew
C. have known
D. has known
Grammar › View
Lisa usually _____ to bed late.
A. goes
B. go
C. is going