- 搜标题
- 搜题干
- 搜选项
单项选择题
Which of the four choices can substitute the underlined clause in the following sentence?
Which of the four choices can substitute the underlined clause in the following sentence?
If organisms did not reproduce, life would quickly come to an end.
A． Without reproduction
B．
Without reproducing
C．
If not reproducing
D．
If were not reproduced
B．
Without reproducing
C．
If not reproducing
D．
If were not reproduced
