The robots can ___ people under the buildings and can also ___ the sick people.
In summer milk will quickly go bad _____it is put into a fridge.
I have heard a lot of good things about you _____ I came back from abroad.
—Why didn't you try your best to get on the bus?—I tried to, but it had started moving ________ I could get on it.
—Did you call Jim back?—I don't need to, ________ we'll have a meeting together tonight.
In Britain, you must reach 18 ________ you want to drive a car.