Researchers have found clear and convincing evidence ________ happiness isthe key to better health and longer lives.
#92775
A
where
B
whether
C
how
D
that
推荐题目
I thought _____ no use talking with him. _____ was a waste of time.
#94820
A
there…There
B
it…It
C
there…It
D
it…There
The snow is so deep. We can hardly get out of the house, ______?
#93134
A
mustn’t we
B
must we
C
can’t we
D
can we
It is the third time so far that such a festival ________in my hometown.
#92063
A
has held
B
has been held
C
will be held
D
had been held
Scientists say it may be five or six years ____ it is possible to test this medicine on human patients.
#92433
A
since
B
after
C
before
D
when