Seeing the chemical ________ to the sunlight, Mr. Lee warned the workers to be careful when dealing with it.
#101453
A
to expose
B
exposing
C
exposed
D
being exposed
推荐题目
We are confident that the environment________by our further efforts to reduce pollution. (2013·辽宁，30)
#99433
A
had been improved
B
will be improved
C
is improved
D
was improved
—Brandon, do you know who wanted me on the phone?—Sorry. I don’t know. I ________ a bath in the bathroom.
#104471
A
have had
B
was having
C
had
D
am having
. I’ve won a holiday for two days to Florida. I _______ my mum.
#102401
A
have taken
B
am taking
C
take
D
will have taken
Polly observed that she ______ by a tall man in a dark coat when she ______ the faces around her on the train.
#102499
A
was watched; stared at
B
was being watched; glanced at
C
was being watched; glared at
D
was watched; looked at
I could have turned to Mr. Smith for help, but he ______ too busy then.
#104216
A
is
B
was
C
should be
D
has been