________ 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
______everything into consideration ,they ought to be given another chance.
#97571
A
Taken
B
Taking
C
To take
D
Having taken
Please do me a favor — ______ my friend Mr. Smith to Youth Theater at 7:30 tonight.
#93040
A
to invite
B
inviting
C
invited
D
invite
They considered ______ a computer, which was considered ________ a great help in their work.
#95316
A
to buy; to be
B
buying; being
C
to buy; being
D
buying; to be
The examination results _____in the speech of our headmaster delighted all of us.
#93414
A
refer to
B
referring to
C
was referred to
D
referred to