He _____ some French while he was away on a business trip in Paris.
When we climbed up to the top of the mountain, we were all ___________.
When the audience heard the alarm, they all hurried to they thought was an emergency exit door.
---I hear you won the prize in the English contest last week. ---That was the second time I ________ the prize.
The computer center, ________ last year, is very popular among the students in this school.
We can’t take part in the competition ________ we get our student card.