27. ______ days went by, the tree grew taller and taller.
|
A. As
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B. As soon as
|
C. When
|
D. After
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28. One of the best ways for people to keep healthy is to ______ good eating habits.
|
A. grow
|
B. find
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C. increase
|
D. develop
|
29. They arrived ______ Shanghai ______ a cold morning.
|
A. in, in
|
B. in, on
|
C. at, on
|
D. at, in
|
30. He ______100 dollars ______ a plastic cup. It was too expensive.
A. spends, on B. spent, in C. spent, on D. spends, in
