题目内容

17.He was afraid of losing his way and made__________on the trees with a knife.

A. symbols
B. words
C. marks
D. signs

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18.He__________to see what I meant, though I explained again and again.

A. wondered
B. was unwilling
C. fell
D. failed

19.Your plan__________quite all right, but is it practicable?

A. hears
B. sounds
C. feels
D. looks like

20.We should__________fully the importance of this new policy.

A. understand
B. know
C. learn
D. research

21.Marry looked pale. She said had a__________headache.

A. light
B. little
C. slight
D. obvious