单项选择题
It （） around six o'clock when I drove back yesterday because it was already dark.
A. must have been B. must be C. was to be D. had to be
单项选择题 There are more （） in the board.
单项选择题 《出境货物报检单》启运地应填写( )。
单项选择题 出口色织棉布H.S编码为5208.4100.10，其计量单位为“米”，该货物描述如下：长2000米，净重54公斤，10个纸箱包装。则报检员在填制报检单时，“数/重量”栏应填( )。
