He’s already been back to Australia,________ — _______ .He’s on a visit to Shanghai .

Why didn’t Nick come to schoolyesterday——–_______ he was ill

There are _____ flights between the two cities, _____ it convenient for people in one city to travel to work in the other.

The good thing is that they______ very easily to new environments.

How long have you _________ your watch It looks new.—Only about three weeks.