in the letter,tom saidthat he was ___our taking a holiday in USA.

问题描述:

in the letter,tom saidthat he was ___our taking a holiday in USA.

应该填expecting.
因为这是一封信,所以不论是出于客套的原因或是其他的原因,Tom一定是在邀请“我们到美国去度假”.所以用expect这个词,表示“期待”,也就是“looking forward to” 的意思.