-- I’m exhausted. I _____ on a project day and night.-- You’d better have several days off after finishing it. Otherwise you might break down.
She read the letter through before sending it, ______ for spelling mistakes.
“You’ve left the light on.” “Oh, so I have. _____ and turn it off.”
New technology ______ to make sure that the cars, taxis, buses and trains we use ______ the air.
The real test of ______ English is whether they can speak, read, write and orally understand good standard English.
—I’ve taken someone else’s green sweater by mistake. —It ______ Harry’s. He always wears green.