11.where is your father? ---he ( )work. and where is your mother? ---she ( )in the room. A.went to.is reading B.has been to.is reading C.has gone to.has read D.has gone to.is reading
13.may i speak to huxiaoqian?----sorry .she( )shanghai.but she( )these days. A.has been to.will be back in B.has gone to.will come back after C.has been in.will return in D.has gone to.will be back in
15.while i( ).the machine ( )working. A.worked on it.was stopping B.worked it on.stopped C.was working on it.stopped D.was working on it.was stopping 难度:3