8.Customers are asked to make sure that they ____ the right change before leaving the shop.
#105342
A
will give
B
have been given
C
have given
D
will be given
推荐题目
7.Although the causes of cancer ____， we do not yet have any practical way to prevent it.
#105343
A
are being uncovered
B
have been uncovering
C
are uncovering
D
have uncovered
Though the medicine for my disease______, I should often______ at home or in the open air.
#105327
A
works out; work out
B
is working; work out
C
is working out; work
D
works; work
—Sorry, I didn't catch you.—Be quiet, please; the baby ________.
#105309
A
was sleeping
B
is sleeping
C
slept
D
has slept
—Joan，what ________ in your hand?—Look！It's a birthday gift for my grandma.
#105314
A
had you held
B
are you holding
C
do you hold
D
will you hold
What shall we use for power when all the oil in the world has ?
#105323
A
given out
B
put out
C
held up
D
used up