题目内容

The old ____ told a joke to her children and they all laughed.

A. man
B. men
C. woman
D. women

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The cadets _________a new lesson when team leader came in.

A. have
B. having
C. were having
D. are having

——What are you doing? —— I am_______ a letter.

A. writing
B. written
C. wrote
D. write

Tom is not _______his homework now.

A. doing
B. do
C. does
D. did

______he ______it to you then?

A. Does explain
B. Did explains
C. Does explains
Did explain

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