— Henry was forced to leave for the invalid visa.
— He__________the period of time
A.should have extended B.must have extended
C.may have extended D.would have extended
Try to buy less______unnecessary shopping could become another source of pressure to the environment.
A.though B.unless C.because D.before
Take an active part in programs you enjoy______you can meet various kinds of people.
A.what B.when C.that D.where
Mr.White works with a chemical import-export company,but he________for this industrial exhibition, since he is on leave.
A.has worked B.works C.has been working D.is working
The free trade port needs to______ the possibility of sharpening the competitive edge of the island worldwide.
A.exploit B.explode C.explore D.export
假如你是李华，你的英国朋友 Peter 来信咨询你暑假的学习和生活安排，请根据以下要点给回信，内容包括: 1.阅读； 2.锻炼身体；3.参加社会实践。
注意：词数 100 左右，可适当增加细节，以使行文连贯。
