19( ) in the open air, wet clothes can get dry easily.

A. 　 his luggage was loaded

B. 　 had his luggage been loaded

C. 　 loaded his luggage

D. 　 his luggage was being loaded

A. 　 whose else can it be

B. 　 whose else’s can it be

C. 　 who’s else can it be

D. 　 who else can it be

A. 　十年文化大革命

B. 　改革开放和社会主义现代化建设的实践

C. 　中国和其他国家社会主义建设的经验教训

D. 　其他国家社会主义兴衰成败的经验教训

A. 　国营企业

B. 　私营工商业

C. 　党政机关

D. 　合作社

A. 　 as

B. 　 that

C. 　 and

D. 　 but

A. 　 There was

B. 　 There is

C. 　 There being

D. 　 There having

A. 　 to stay…go

B. 　 stay…going

C. 　 staying…going

D. 　 staying…go