________ global energy safety, all the countries have been called on to take joint efforts ．
#97844
A
Having ensured
B
Ensuring
C
To ensure
D
To have ensured
推荐题目
With a lot of tough problems , the pilot was still calm, cool and collective under pressure.
#96144
A
solve
B
solved
C
solving
D
to solve
--- Did you understand what the teacher said ?---Yes! She explained the text in detail to make her lessons __________.
#94064
A
easy understood
B
easily to understand
C
easily understood
D
easy understand
He will keep ________ new ideas so he can help farmers around China.
#96464
A
trying on
B
trying out
C
trying
D
both B and C
---He admitted __________in the examination. ----That’s why he was not admitted _____ universities.
#94451
A
to cheat; by
B
cheating; to
C
to cheat; to
D
cheating; by
--- The bridge outside the school annoys the students awfully. --- Actually, we don’t know when it will be completed.
#96771
A
to be built
B
to build
C
being built
D
having been built