16.I prefer a _______ typewriter to an automatic one.& b; n$ Z! O0 K: }6 f3 _- k
P$ r3 g y; T- N+ N( a7 E; jA. mechanic B.manual C.merchant D.mental
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9 W& P* R2 Y: t8 Q* [- `17.If you want to stop for a moment, just press the ‘_______’ button on your tape recorder., z3 U7 {/ g* I3 P3 T6 v9 f
6 |; l1 q% D3 {0 f5 f$ l! RA. toilet B.thumb C.violin D.pause
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20.I have _______ three terrible English examinations this week.$ k# P0 [# I8 g, ^; ]/ f
* m2 N5 d) X0 Y& f# ?1 j
A. observed B.operated C.undergone D.suffered% Q% O: e6 C, S- w2 G9 z; v- ^, g
16.B 17.D 18.D 19.A 20.C |