Stop! You can never touch this machine when it ________, it is very dangerous.
A. has been operated B. will be operated C. is operated D. is being operated
. I think that this film is _______ a film, it is also a good material for education.
A. more than B. not less than C. at least D. far from
I don’t want to read all these old newspapers, please tell me where the __ ones are.
A. last B. latest C. late D. lately
---- How did her family feel when you visited them?
---- My coming ________ the happiness of her family.
A. added up to B. added up C. added D. added to
_________ to 100℃, water will boil.
A. Being heated B. Heated C. Heating D. To heat
He __________ his aunt’s when he went to Wuhan on business.
A. called on B. called at C. dropped in on D. dropped in
