单项选择题
A.your responsible B.you responsible C.you are responsible D.your are responsible
I look forward to（）for this at your earliest convenienc...
单项选择题I look forward to（）for this at your earliest convenience.
A.having your approval B.approved by you C.get your answer D.know your opinion
I know nothing（）about it.A.whateverB.whicheverC.whoever...
单项选择题I know nothing（）about it.
A.whatever B.whichever C.whoever D.whomever
I immediately telephoned the engine room to tell（）was h...
单项选择题I immediately telephoned the engine room to tell（）was happening to the C／E.
A.it B.this C.what D.that
