Only after the anesthetist gave the patient an anesthetic, __________________.
A、could be the operation conducted
B、could the operation be conducted
C、could be conducted the operation
D、the operation conducted could be
A、could be the operation conducted
B、could the operation be conducted
C、could be conducted the operation
D、the operation conducted could be
Only after class_____to raise the question.
A.did he allowed
B.was he allowed
C.he was allowed
D.did he allow
A.assigned
B.resigned
C.designed
D.departed
After the class, students went out of the classroom one by one, but only Mary ___.
A、left
B、was left
C、has left
Only after the local residents become sick, ______ (化学品公司才开始清理污染场所).
A friend of mine returned to his house after a holiday, only to find it ______.
A.to be broken into
B.had broken into
C.was broken into
D.had been broken into
Only after a baby seal is pushed into the sea by its mother ______ how to swim.
A.will it learn
B.it will learn
C.has it learned
D.it has learned
Only after the students have mastered the rules of pronunciation _____.
A.can they memorize words more easily
B.when can they memorize words more easily
C.then they can memorize words more easily
D.when they can memorize words more easily
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