Please don’t try to back out _____ everything has been arranged.
A．until B．though C．when D．unless
Simon is very regretful. If he had been more careful, he _____ such a big mistake.
A．hasn’t made B．hadn’t made
C．won’t have made D．wouldn’t have made
______ by jeep, we visited a number of cities in South China.
A．Traveling B．Traveled
C．To be traveling D．Having traveled
Zheng He had over 300 ships, _______ some were over 150 meters long and could carry up to 1,000 people.
A．that B．which C．of which D．on which
______ the dangerous situation, he was not nervous but handled it in a clever way.
A．In search of B．In need of
C．In face of D．In support of
Having cycled for two days, Howard at last arrived at ______ was a place famous for its beautiful scenery.
A．where B．that C．which D．what
