Water, _______enough, can change into vapour quickly. 
#98828
A
when heated
B
heating
C
though to be heated
D
when is heated
推荐题目
Having arrived at the station, _____. 
#98250
A
it was found that the train had left
B
the train had left
C
the train was found left
D
he found that the train had left
____ to Anne's birthday party, Mr. Brown is now searching shop after shop for a nice present for her.
#89897
A
Having invited
B
Having been invited
C
Have been invited
D
Being invited