• -- I have got a headache.
-- No wonder. You_________ on the math exercises too long.  A．work8 E) A3 a, R! Y6 F3 ]: V$f: M B．are working/ K$ G& X8 \1 U: Z7 _1 U* Q5 Y& @2 f8 [ C．have been working6 ^- Z, b; C& E8 ^! . D D．worked8 J# j! g9 V! E8 G9 Q! S' N

• Tom ________ in the library every night over the last three months.(2011·北京) A．works9 T4 [' @* c3 h1 E8 ]# @; Q2 X B．worked" B8 X& I7 M- Q# K C．has been working0 A% L: P2 a# F+ V2 f7 I D．had been working$f- F/ X, N- Z7 S6 K L$ Z* d; c: G

• —Why，Jack，you look so tired!
—Well，I ________ the house and I must finish the work tomorrow. A．was painting! a% Y% C0 d5 P5 f. ) B! h B．will be painting% @+ b5 \1 \5 @0 F- K, X8 P6 I C．have painted5 V/ e8 Q, J9 9 e7 J D．have been painting: d; \& [ Y, M8 e" T" Q0 e

• I have to see the doctor because I ________ a lot lately. A．have been coughing% b4 N5 f- @6 S' E1 C7 V# ]9 N B．had coughed D) C1 e( U+ j1 M0 I C．coughed Y! ?8 e) G. [4 V0 F D．cough7 B! M- W. I6 U- Q2 F6 Z% @

• —I'm sure Andrew will win the first prize in the final.
—I think so.He ________ for it for months. A．is preparing. ]$W3 [ [# ]6 ?0 P& X B．was preparing* ^* S5 U7 j6 h& _2 j+ Y C．had been preparing; @2 d0 M0 ]: B" [ D．has been preparing' F& C I5 K( c6 @1 Z/ ]+ H3 Q • It's said that they ________ a better life ever since they moved to the US. A．had enjoyed8 h, G2 Q/ Y% V. Z B．have been enjoying' g! T7 R7 d, A C．were enjoying* _0 H U2 E: d7 O9 P& I$ \0 T%  D．would enjoy9 U3 c- f5 Z5 D7 i$?6 Q • Kate ________ on her new novel, which is supposed to come out next month. A．was working# h. N& Q9 Z- Q$ W B．had worked6 T8 ?! ]- T# f9 _ C．will be working- B" @% Q' h' @2 B4 @; M D．has been working& g0 D/ ?, ]6 f

• I have to see the doctor this afternoon because I ____ a lot lately. A．have been coughing ?, M; E4 O1 W1 j. C- \6 G B．had coughed6 P+ A+ ^- _4 V# Z8 X( 7 W C．coughed* " b0 S( L9 J; O* R D．cough$R3 P- C4 : C& f1 Y+ h • Minister Bill De Blasio in office fewer than 48 hours when he came face to face with his biggest challenge in his life． A．has been+ Q3 O' A6 Q6 B2 B- X8 D+ e B．had been- Y; C: Q) S) _6 b. F: P C．would be* M3 N3 f3 ? d$ I' M D．is9 f5 a# h E5 \! c( e; Y

—Your mind must have been  when I was speaking, wasn’t it? A．wondering1 H+ A# @* D- W7 Y2 c' K B．wandering1 ^3 U# N1 E+ d: L6 H& C; [ C．pretending8 E, M0 g! N1 \) W# W D．Extending M( ^9 d6 D7 K3 H`