请问一下是do harm to do还是doing
请问一下是do harm to do还是doing
do harm to doing还是do
do harm to do sth.还是 do harm to doing sth.
请问是to do 还是doing?
do harm to和be harmful to 后面跟to do还是doing
请问是believe sb.doing 还是believe sb to do?
请问是decide to do sth 还是 decide doing sth?
is it doing harm to do.是反问句吗?常见反问句还有哪些?
是think to do还是think do 还是think doing
ask后面是加to do还是doing,还是do?
should后面是to do还是doing还是do呢?
是must to do还是must doing 还是must do?