I’ll never understand how it __________that you were late three times a week.
| A．came about | B．came out | C．came across | D．came up |
When the audience heard the alarm, they all hurried to they thought was an emergency exit door.
| A．what | B．which | C．where | D．who |
---I hear you won the prize in the English contest last week.
---That was the second time I ________ the prize.
| A．had got | B．got | C．get | D．have got |
The computer center, ________ last year, is very popular among the students in this school.
| A．open | B．opening | C．have opened | D．opened |
We can’t take part in the competition ________ we get our student card.
| A．before | B．if | C．While | D．as |
He made a promise __________he would help me.
| A．what | B．when | C．that | D．which |