1. This is one of
_________(busy) underground

stations in London.
2. —And now, better _________(go) to hospital.
—All right.
3. Plenty of shops _________(be) open on Sunday mornings.
4. It’s only about an hour’s _________(

f

ly) from Qingdao to Beijing by air.
5. Ther

e will be a school _________(leaver) party next week.