Don’t start reading a book _____ you find that it’s one you can read with ease and understanding.
#32304
A
when
B
if
C
unless
D
Though
推荐题目
The reason _____ he refused to attend the meeting was that they didn’t give him an invitation earlier.
#33657
A
how
B
which
C
why
D
because
They are putting too much carbon dioxide into the atmosphere, ______ prevents heat from escaping from the earth into space.
#31962
A
what
B
that
C
which
D
who
Mobile phone users have developed a series of symbols, such as and to show ________ they feel.
#30316
A
which
B
when
C
how
D
why
As a green hand, he doesn’t know______ it takes to start a business here.
#30179
A
when
B
how
C
what
D
which