We’d better _________ when he is thinking, as he prefers to solve problems on his own. 
#13434
A
wake him up
B
set him aside
C
leave him alone
D
ring him up
推荐题目
 It is said the factory is now __________ large as what it was.
#11999
A
twice as
B
as twice
C
twice much
D
much twice
___ century has just gone by and we’re now in a new century.
#14476
A
The twenty
B
The twentieth
C
Twenty
D
Twentieth
.Mr. Black has been teaching English in a middle school _____ he came to China.
#13061
A
for ever
B
ever since
C
ever before
D
long before