Dr. Smith together with his wife and daughters visit Beijing this summer.A. is going to

问题补充：

Dr. Smith, together with his wife and daughters, visit Beijing this summer.

A. is going to

B. are going to

C. was going to

D. were going to

答案：

(答案→)A. is going to

B. are going to

C. was going to

D. were going to

解析：考查主谓一致和时态。本题的主语是Dr. Smith,应该使用单数。再根据this summer可知是将来时，be going to也表示将来时。故A正确。