When _________ where he had put the book, he kept silent.
#94787
A
ask
B
asking
C
to ask
D
asked
推荐题目
It is no use________without doing.
#88493
A
to promise
B
promising
C
promise
D
to be promised
I used to __ to the south, so now, I am used to __ in a hot climate.
#97405
A
go; live
B
going; living
C
go; living
D
going; live
 _________ the temperature might drop, coal was prepared for warming.
#88900
A
To consider
B
Considered
C
Considering
D
To be considered
_____ the front door _____, he had to enter the room through the back door.
#98866
A
Seen; painted
B
Seeing; painted  
C
Being seen; being painted
D
Seeing; being painted