I’m looking forward to my grandparents this summer holiday. A. seeB. seesC. saw D. seeing

问题补充：

I’m looking forward to my grandparents this summer holiday.

A. see

B. sees

C. saw

D. seeing

答案：

A. see

B. sees

C. saw

(答案→)D. seeing

解析：根据语境可知此句的含义是今年暑假我期望去看望我的祖父母，考查的是固定句型结构look forward to doing sth表示期望做某事，故选D。