The Dead Sea is so salty ____ it’s hard for anything to live in it, ____ is why it’s called theDead Sea.

Your spoken English is so goodHave you been abroad?—YesI in London for two years

Life in the oceans ranges from the tiniest plankton ______ up to giants like sharks and whales.[ ]

Kids, help ______ to some apples, please. — Thank you very much.

The fact has worried many scientists ________the earth is becoming warmer and warmer these years