.---Why were you not at the concert last night ?
---Oh.I ______ for a friend from Europe at the airport.
| A．watched | B．have been watching |
| C．was watching | D．had watched |
_______, when I went to town to see my sick teacher, he said to me, “I’ll come
back to school again _______.”
| A．One day; the other day | B．Some day; one day |
| C．Some day; the other day | D．The other day; some day |
Sweet memories ______ as I looked at the pictures _____were taken at the beach
last summer.
| A．took out; which | B．crowded in; which | C．ended up; that | D．dropped by; that |
Dr Yuan makes______ possible______ one-third more of the crop in the same fields.
| A．it; produce | B．it; producing | C．it; to produce | D．it; produced |
I don't have enough money．I, _____, can't afford to buy Audi A3 Sportback．
| A．therefore | B．so | C．however | D．thus |
Where was it ______ you _______ our maths teacher?
| A．where; came to | B．that; come across, |
| C．that; came across | D．where; come to |