The number of people invited _________ fifty, but a number of them _________ absent for different reasons.

Let’s go shopping at the new mall. —Why not shop online It’s ____.

We should go by bus ______ we can get there earlier.

I met an old friend __________ on the train yesterday.[

We’re doing a lot to protect ourenvironment, but it is not good enough. —Sowe should try______ to look after it.