单句改错。They think A(this) B(their) duty to C(meet) the needs of D(customers).

单句改错。The A(Englishman) speaks Chinese B(as) though he C(is) a D(Chinese). 单句改错。Can I A(have) B(a) empty box C(for) D(these) shoes? 单句改错。It was A(quite) cold B(outside) but they C(still) kept D(to work). 单句改错。A(You'd better) B(not to) be late C(for) the meeting D(again). 单句改错。A(Paper) B(of) this kind C(is made of) bamboo,I D(guess). 单句改错。A(Know) some B(everyday) English will be C(of) great D(help). 单句改错。The notice was A(written) and B(putting) up C(by) D(the) students yesterday. 单句改错。He said A(that) he B(will) keep the children C(from) the D(fire). 单句改错。The music A(was sounded) B(beautiful). It C(was) popular D(among) students. 单句改错。The teacher A(got) B(anger) with Peter C(for) his D(being late). 单句改错。Tom A(studies) B(harder) C(than) D(anyone in his class). 单句改错。The A(lesson) B(which) he is interested in C(it) D(is) quite difficult. 单句改错。A(It) B(took) C(me) two hours D(finished) the composition. 单句改错。She A(lives) B(in) a small village C(which) D(there are) no schools. 单句改错。The book A(that) I B(borrowed) C(it) from the library is D(well written). 单句改错。A(What) B(a fine) weather! C(Let's) go D(swimming). 单句改错。I've A(never) seen B(a such) C(wonderful) film D(before). 单句改错。The little girl A(is) B(afraid) of C(make) her mother D(angry). 单句改错。There A(are) a glass of water, B(two books) and C(an apple) D(on) the table. 单句改错。She A(asked) us B(to finish) the work as C(quick) D(as possible).