He is to have gone abroad for I haven’t seen him for weeks.A. possibleB. likelyC. probabl

问题补充：

He is to have gone abroad,for I haven’t seen him for weeks.

A. possible

B. likely

C. probable

D. certainly

答案：

A. possible

(答案→)B. likely

C. probable

D. certainly

解析：句意：他可能出国了，因为我几个星期没有看见他了。ABC都有“可能”的意思，D项certainly“当然”， be likely to do sth. 很可能做某事, 其主语可以是人也可以是物; probable和possible尽管也有“可能”的意思, 但其主语不能是人;所以选B。