Aluminum isn’t found free in nature, owing to its always ____ with other elements, most commonly with oxygen.
#93060
A
being combined
B
having combined
C
combine
D
combined
推荐题目
----- Are you used to______ in the north with the old couples? ----- Yes, I am glad to find out that coal is used______ electricity for home use.
#96322
A
live; to produce
B
living; to produce
C
to live; produce
D
living; producing
. __________ in Hangzhou station for two hours, the old man eventually caught the last train to go back to his home in Huangyan.
#97162
A
Waiting
B
To wait
C
Having waited
D
To have waited
I wanted to park my car by the roadside, but a policeman came up and told me ____.
#92746
A
not to
B
not to do
C
not do it
D
do not to
Schools across China are expected to hire 50,000 college graduates this year as short-term teachers, almost three times the number hired last year, ____ reduce unemployment pressures.
#98909
A
help
B
to have helped
C
to help
D
having helped
Mark often attempts to escape _______ whenever he breaks traffic regulations.
#94730
A
having been fined
B
being fined
C
to have been fined
D
to be fined