________by a group of children,the old man was delighted.
#94521
A
To be surrounded
B
Surrounding
C
Surrounded
D
To be surrounding
推荐题目
________ 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
If ____ in, viruses can result in illness or even death.
#88250
A
breathe
B
breathing
C
breathed
D
to breathe
His health failing, ______ last year.
#92529
A
so the school gave Mr. Smith leave
B
the school had given Mr. Smith leave
C
so Mr. Smith went on leave from work
D
Mr. Smith went on leave from work