______ in simple English, the book is easy to understand.
A.Writing
B.Written
C.To write
D.Being writing
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Look, this roof is covered with-________leaves.
A. falling
B. fallen
C. fell
D. felt
Can you make yourself ______ in English?
A.understand
B.understood
C.understanding
D.to be understood
With the problem ______, we are getting along even more smoothly.
A.settles
B.to settle
C.settled
D.to be settling
______ that they were trying to poison him, he refused to eat anything.
A.To convince
B.Convince
C.Convinced
D.Having convinced
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