Ⅰ.单项填空
1. — What is the price of petrol these days?
— Oh, it ______ sharply since last month.
A．is raised B．has risen
C．has arisen D．is increased
2. Passengers are permitted ______ only one piece of hand luggage onto the plane.
A．to carry B．carrying
C．to be carried D．being carried
3. — We should leave early ______ there's heavy traffic.
— There's no hurry. We have two hours to go before the concert.
A. so that B. even if
C. in case D. as though
4. We should offer the post to Harry. He has technical knowledge ______ rich experience.
A. instead of B. by means of
C. due to D. as well as
5. The frightened girl put her hand ______ her mouth and tried to stop herself from screaming.
A. off B. into
