Question

【题目】On his _________ from Australia we gave him a welcome party.
A.came back
B.return
C.return back
D.went back

Answer 1

【答案】B
【解析】句意：他一从澳大利亚回来我们就为他举办了一个欢迎会。on/upon+名词/动词-ing，一……就……。A.是动词的过去式；B.return可作动词也可作名词用；C.return不能与back连用；D.是动词的过去式，同时根据his也可以确定空格的单词的词性是名词，故选B。