Customersofficer(海关官员):()willyoubestayingintheUnitedStates?Passenger:Twoweeks. A: Howoften B: Howmuch C: Howmany D: Howlong

In order to make sure he would be able to attend the meeting, I called him up twoWeeks _____________. A: in all B: in turn C: in time D: in advance

In order to make sure he would be able to attend the meeting, I called him up twoweeks _____________. A: in advance B: reap the benefits of C: remind of D: all at once