【题目】He asked us to __________him __________carrying the heavy luggage.
A.assist; with
B.help; to
C.assist; in
D.help; with

【答案】C
【解析】assist sb. in doing sth.和help sb.（to）do sth. 意为“帮助某人做某事”。help sb. with sth.意为“帮助某人某事”，with后不接动词。句意：他请求我们帮他拿那些很重的行李。故选C。