Choose the correct words.

He saw a big fish while / as soon as he was swimming across the lake.

As soon as / While I saw it, I swam away.

When / While he saw the accident, he went to help.

My dad was waiting for me at the station when / while I arrived.

I kissed my grandmother as soon as / while she opened the door.

We were standing at the bus stop when I while it started to rain.

While / As soon as we were exploring the mountain, we saw a deer.

Elena fell over as soon as / while she was playing tennis.

• Language point: Linking words

Complete the key sentences with the words given below.

when    after    as soon as suddenly while

The rescue happened _____________ we were on holiday.

____________, a huge wave crashed into them.

_____________ a few minutes, we saw the dog again.

________  ____ they saw the dog, they swam out to it.

_____________ they reached the dog, they put it onto a surfboard.

( 5-x) < 0 và (3x - 1 phần 4) < 0

tổng của 2 số là 50.tìm 2 số , biết số lớn gấp 3 lần số bé