The first decade of the 21st century _____ the breathtaking and non-stop development of China．
A．witnesses B．witnessed
C．will witness
D．had witnessed
---I had practiced my spoken English, but still failed in the oral test．
---Don’t be discouraged．_____ and you will surely pass it．
A．Make a bit more effort
B．To make a bit more
C．Making a bit more effort
D．If you make a bit more effort
A strange girl entered the room and told me a story of her own, _____ I suspected the truth．
A．that B．which C．of which D．at which
Just imagine performing such an opera as Turandot in the Forbidden City---there _____ be a better setting!
A．mustn’t B．shouldn’t C．couldn’t D．needn’t
--- I can’t go for a picnic with you because something urgent has _____．
---What a shame!
A．come up B．cleared up C．stayed up D．ended up
After a talk with his mother, the little boy has seen to _____ that the same mistake doesn’t happen again．
A．one B．it C．him D．himself
