Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.
#59036
A
which
B
what
C
that
D
when
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He was busy writing a story, only ______ once in a while to smoke a cigarette.
#4946
A
to stop
B
stopping
C
to have stopped
D
having stopped
So tired __________ after walking such a long way that I ___________ stand.
#4606
A
was I; could hardly
B
did I ; could hardly
C
was I; couldn’t hardly
D
I was; could hardly
— Ten dollars, please! — How terrible! I ______ bringing my wallet with me.
#59042
A
was forgetting
B
forgot
C
had forgotten
D
am forgetting
With temperature ________ so rapidly, we could not go with the experiment.
#4563
A
fall
B
falling
C
fallen
D
to fall
—I don’t know how to deal with it. --Well. I recommend that you ______ some professional advice.
#4525
A
would get
B
will get
C
get
D
can get