单项选择题

(If) traffic problems are not solved soon, (driving) (in) cities (becomes) impossible.

A. If
B. driving
C. in
D. becomes
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Neither John (and) his father was able (to wake up) (early enough) (to catch) the morning train.
A. and
B. to wake up
C. early enough
D. to catch
单项选择题
The Rose Bowl parade (takes place) every year (in) Pasadena (in) (New Year's Day).
A. takes place
B. in
C. in
D. New Year’s Day
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