Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
#92600
A
when
B
after
C
before
D
since
推荐题目
It's dangerous to let the children who are _____ go swimming in the river.
#94757
A
too young to
B
so young
C
not old enough to
D
so old
_______seems to be no possibility ______Li Hua can win the first prize in the 100 – meter race.
#93098
A
It; that
B
There; that
C
There; whether
D
It; whether
It was not immediately obvious _____ water was to be fundamental to the development of life.
#93884
A
what
B
that
C
when
D
why
—Mary, the telephone is ringing!—______, but I am washing my hair.
#94274
A
I’m sorry
B
You answer it
C
Hold on
D
That’s good
He is such an unselfish man. You cannot help but ________ him.
#93294
A
respect
B
to respect
C
neglect
D
to neglect