[单选题]I [happened to see]the taxi before it disappeared around the corner of the
[试题]B.eforeyoumailthisletter,youshouldcheckagainwhetheryouhave_______itornot.A.sunkB.sighedC.soughtD.sealed
[单选题]Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible ().A . deflectionB . discrepancyC . errorD . tolerance
[单选题]You should [convert]RMB into foreign currency before you go abroad.A.alterB
[单选题]You should have [blended]the butter with the sugar thoroughly before you he
[单选题]You should have [blended]the butter with the sugar thoroughly before you he
[单选题]You should work for __________ if you become an editor of the magazine.A. just nine hours a dayB. no less than nine hours a day C. about ten hours a dayD. less than 25 hours a week
[单选题]_____you may have, you should gather your courage to face the challenge.A. However a serious problemB. What a serious problemC. However serious a problemD. What serious a problem
[单选题]Hi, haven't seen you for ages! You look fine._________。 You look well, too.
[单选题]How are you? You look nice!______________.A.Thanks, so are you B.Thanks, so