Howlong________they________(dig)theditch?
Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.
He________methathedecidedtoleaveonMonday.
ComradeLi________beinBeijingbecauseIsawhimintownonlyafewminutesago.
Wewerebusy________(get)thingsreadyforthetrialproductionwhenhephonedus.
Abeamoflightwillnotbendroundcornersunless________(make)todosowiththehelpofareflectingdevice