Câu hỏi:

It _______ half of your plate should consist of vegetables and fruits.

Mary: "Sorry, I forgot to phone you last night." - Tom: "________"

Face ID, which is an Apple's security technology for iPhone X, permits users _____ their devices just by looking at them.

Choose the underlined part that needs correcting

It was in 1971 that  transatlantic supersonic transportation became commercially availability

Last summer, we ___ to travel to Phu Quoc, which is considered the pearl island of Vietnam.

Don't put off doing your homework until tomorrow. Do it right now, _____?

Choose the best answer to complete each of the following sentences

Britain has accused Russia ____ poisoning the ex-Russian spy Sergei Skripal and his daughter.