The queen will visit the town in May, _________she will open the new hospital.
A. when B. then C. while D. but
The queen will visit the town in May, _________she will open the new hospital.
A. when B. then C. while D. but
A
本题为连词用法的考查,句子无承接和转折的意思,故排除B、D,而while更强调两个动作同时发生,所以也不符合题意。