问题

ear, the coal workers theirlungs X-rayed to ensure their health.
A:are having
B:havehad
C:have
D:had had
B:havehad
C:have
D:had had
正确答案是:
同类题型
Tom, your hair is too long. Would youplease get your hair _______.
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ou still very busy—- Yes, I ______ the report forthe manager and it won’t take long.
Are you going to the concert?—I’m not sure. I stay inside and watch it live on TV instead.
We would have called a taxi yesterday if Harold ______us a ride home.