昨天非常炎热,而今天有点冷。It was very hot yesterday __________ __________ it is a bit cool today.
In the past 30 years China ______ great advances in the socialist revolution and socialist construction.
I ______ go to bed until I ______ finished my work.
Mary is very late, she ______.
Most of the artists _______ to the party were from South Africa.
“What did you do in the garden?” “I watched my father ______ his motorbike.”