( )31.A. because B. as C. so D. for

　　( )32.A. surprised B. glad C. worried D. excited

　　( )33.A. studied B. worked C. stayed D. lived

　　( )34.A. passing B. doing C. carrying D. sending

　　( )35.A. left B. gone C. taken D. arrived

　　( )36.A. because of B. instead of C. by D. with

　　( )37.A. rope B. line C. stick D. ruler

　　( )38.A. run B. walk C. jump D. stop

　　( )39.A. nothing B. nobody C. no room D. no house

　　( )40.A. carried B. grasped C. took D. threw

　　( )41.A. hard B. high C. heavily D. greatly

　　( )42.A. garden B. tree C. land D. air

　　( )43.A. hands B. his shoulders C. his face D. his neck

　　( )44.A. Backwards and forwards B. Up and down

　　C. Left and right D. Around and around

　　( )45.A. running B. stopping C. rising D. falling

　　( )46.A. enough B. more C. too D. less

　　( )47.A. At first B. At last C. At once D. At least

　　( )48.A. set up B. gave up C. send up D. picked up

　　( )49.A. on B. for C. by D. with

　　( )50.A. clean B. slow C. funny D. quiet