You can do it!
决定不做某事
decide not to do sth.
对......很慷慨
be generous with...
考虑做某事
consider doing sth.
We _____ (got) everything ready before they came.
had gotten
Before I arrived at school, my classmates ___ (go) to the zoo.
had gone
She has gone to Shanghai.(用by the time 改写)
She ____ ____ to Shanghai by the time I arrived there.
had gone
How many sides does a room have?
2 - inside and outside
翻译：他说他去过上海两次
He said he had been to Shanghai twice.
By the time we got to the station, David ____ for ten minutes.
A. has left B. had left
C. has been away C. had been away
D