—These Maths problems are too hard to ______. Can you help me? —There are many ways, but the most important is to try your best.
#62119
A
work out
B
come out
C
put out
D
look out
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 She ________ a model before she _______ a superstar.
#54030
A
have been, became
B
had been, become
C
had been, became
D
has been, become
 It’s too noisy here. Please ask him to ____the radio a little.
#62798
A
turn down
B
fall down
C
shut down
D
come down