When workers are organized in trade unions, employers find it hard to lay them ________.
A、offD
暂无解析
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
________,Johnhasbeentoseveralforeigncountries.
ItwasthreeBritishsportsmenwho________banneddrugs.
________they'vegottoknoweachotheralittlebetter,theygetalongjustfine.
Idon'tknowhowwecanmake________onthetimetableforanymorecourses.
