________ the mountains was hard work for them but as they looked around, they could not help screaming.
A. Climb B. To climb C. For climbing D. They climbed
It was so bright outdoors that we could see clearly what was happening through the curtains ________ before the window.
A. hanged B. hung C. hanging D. hang
—— Hey，what’s up !
—— Excuse me for breaking in, _____ I really have some news for you.
A. and B. so C. but D. yet
The last thirty years _________ the quick development in almost every field in China.
A. saw B. had seen C. have seen D. would see
A good friend is a person who you can _______ in your hour of need.
A. turn on B. turn off C. turn down D. turn to
______ is widely acknowledged that all mankind is created ______.
A. It, equal B. It, equally C. This, equal D. This, equally
