I’ve been trying to phone Charles all evening, but there must be something wrong with the network; I can’t seem to_____.

The newcomers still don’t know ________ the difficult situation after practicing for 2 months.

She was so _____________ in her job that she didn’t hear anybody knocking at the door.

.When I go out in the evening I use the bike ____the car if I can.

— John seems happy, even though his wife left him and he lost his job. — I think he __________ to put on a brave face.