We must do something to protect the earth, ____we will lose our home.
#56833
A
and
B
or
C
so
D
but
推荐题目
I will never forget that terrible accident _______ it happened so long  ago.
#58094
A
even though
B
so that
C
only when
D
ever since
—Who broke the window yesterday?— ______ Jack ______ Mike. It was Jim.
#55286
A
Not only; but also
B
Both; and
C
Either; or
D
Neither; nor
 In a position like this, one can ________  stand up _______ lie down . So it is very uncomfortable.
#55361
A
both… and…
B
either… or…
C
neither… nor….
D
not only… but also…