问题

She was joyful ________ seeing her son take his first steps.[ ]

A: as
B: upon
C: immediately
D: as soon as

正确答案是：

同类题型

A ______ to this problem is expected to be foundbefore long.

The book into many other languages last years.

looks sad. Did you tell her about herbrother’s accident— Sorry, I ________ her just before her final exams.

Did Tom’s parents go to the meeting yesterday— Yes, ________ of them did, but ________ spoke.

We always keep _____spare paper, in case we run out. [ ]