Animals are part of nature. _____ should be well prepared.
#55466
A
and
B
or
C
but
D
while
推荐题目
—You look so tired. What’s the matter?—I was so busy that I didn’t go to bed 12 o’clock last night.
#56595
A
until
B
unless
C
if
D
so
He has poor eyesight ________ he works on the computer at night.
#57929
A
because
B
because of
C
and
D
but
He speaks ______English ______French. Instead, he speaks German.
#56379
A
either;or
B
not only; but also
C
both;and
D
neither; nor