Don’t turn off the computer before closing all programs_______you could have problems．
- A.or
- B.and
- C.but
- D.so
正确答案及解析
正确答案
A
解析
考查并列连词。此处考查句型：祈使句+and／or+句子。
Don’t turn off the computer before closing all programs_______you could have problems．
考查并列连词。此处考查句型：祈使句+and／or+句子。