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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(This book) of (him) used to be one of the best (sellers) (in) the shop.
A．This book
B．him
C．sellers
D．in
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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