It is believed that forest bathing ______ strengthen the immune system.
#87444
A
should
B
must
C
need
D
can
推荐题目
—I failed again. I wish I ____ harder.---But you ____.
#86370
A
had worked; hadn’t
B
worked; don’t
C
worked; didn’t
D
had worked; didn’t
He﹍﹍the job well, but he    so careless.
#87662
A
had done; had been
B
could do; was
C
could have done; was
D
hadn’t done; had been
The weather turned out to be fine yesterday. I  the trouble to carry my umbrella with me.
#86393
A
should have taken
B
could have taken
C
needn’t have taken
D
mustn’t have taken
I ______ Peter with his work, but I had a lot of things to do myself.
#86588
A
must have helped
B
should have helped
C
needn’t have helped
D
can’t have helped