We can hardly believe such a young boy ______ travel around the world all by himself.
A. may B. need C. should D. must
My friend Jack was the first person I knew ______an iPhone 5S.
A. using B. to use C. used D. having used
They hope to turn our society into one ______ those in need can get help.
A. where B. which C. when D. who
My opinion is ________the same as yours.
A. and so on B. on the other hand C. at risk D. on the whole
My partner wants to keep the company small _____ I’d like to expand it.
A. andB. orC. howeverD. while
With the successful launch of Tiangong-I, which was ______ breakthrough in space field, China's space dream took a step closer to ______ reality.
A. a; / B. the; a C. a; the D the; /
