It's an either-or situation-you can take on-line classes at home or have classes in the school, but you can't do_________.
A.others B.both C.another D.either
Whatever_______happen,we are not going to give up our determined plan.
A.may B.must C.can D.should
The student said there were a few points in the essay he_________impossible to comprehend.
A.has found B.was finding C.had found D.would find
The government is__________efforts so as to strengthen skills training for rural migrant workers.
A.picking up B.stepping up C.holding up D.breaking up
— Henry was forced to leave for the invalid visa.
— He__________the period of time
A.should have extended B.must have extended
C.may have extended D.would have extended
Try to buy less______unnecessary shopping could become another source of pressure to the environment.
A.though B.unless C.because D.before
