题目内容
【题目】I have ________ doing my science project.
A.a difficulty
B.any difficulty
C.difficulty
D.some difficulties
【答案】C
【解析】have difficulty doing sth.“做某事有困难”，是固定搭配，故选C。句意是：我做这个科学课题有困难。
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题目内容
【题目】I have ________ doing my science project.
A.a difficulty
B.any difficulty
C.difficulty
D.some difficulties
【答案】C
【解析】have difficulty doing sth.“做某事有困难”，是固定搭配，故选C。句意是：我做这个科学课题有困难。