说法）、B（决于你）和C（很难说，不可预知）都不符合语境。"you read my mind"意为你知我心，符合语境，故选D。

2.I __________ to send Peter a gift to congratulate him on his marriage，but I couldn't manage it.

A. had hoped B. am hoping

C. have hoped D. would hope

【答案】A

【解析】

【详解】考查过去完成时。句意：我本来计划在Peter结婚时送他一个礼物的，可是我没有做到。第二个分句中"couldn't"用的是一般过去时，它之前的动作用过去完成时。故选A。

3.A study shows the students who are engaged in after-school activities are happier than _________who are not.

A. ones B. those

C. these D. them

【答案】B

【解析】

【详解】考查代词。句意：一项研究表明，参加课外活动的学生比不参加课外活动的学生更开心。空格处代词与the students是对应关系，可以用the ones或者those替代。"them"指代的是前边提到的复数名词，不能与the students形成对应关系。"these"一般不用定语从句修饰。故选B。

4.____________ to think critically is an important skill today's children will need for the future.

A. Learn B. Learned

C. Learning D. Having learned

【答案】C

【解析】

【详解】考查动名词。句意：学会批判性思维是当代小孩未来所必需的重要技能。句子缺少主语成分，而过去分词、动词都不可以做主语。此处用动名词做主语，故选C。