- 试题详情及答案解析
- The determined mother has devoted all she has to ________ her son out of trouble.
| A．helping | B．help |
| C．have helped | D．having helped |
- 答案：A
- 试题分析：考查非谓语动词。devote后面加to sth或者to doing sth。 to在这里属于介词，后面应该接名词或v-ing形式，所以，应该是devote oneself to sth/ doing sth。句意：意志坚决的母亲已经把她的全部都奉献出来，来帮助她的儿子走出困境。故A正确。
考点：考查非谓语动词