Thanks for your corrections! That means, others are correct?

Which is the answer? I got confused. There is a gang / cloud / group / swarm of flies on the heap of rubbish.

What is the differences between "huge" and "large"? Are they same in meaning?

Can I say, A: Today is your birthday. Happy many returns of the da y. B: Thank you.

Can I say, (1) There are a few of pupils are playing happily in the field. (2) He is sweeping the floor in the classroo m. (3) He goes for a jog / goes jogging at the park. (4) She won a champion / championship in the singing competition. (5)

Can I say, Last Sunday was Sally's birthday. Her father threw her a party to celebrate Sally's birthday. Her father gave her a present and it was a beautiful, expensive watch. She was very happy and put on it going to school every day.

Can I say, (5) The fire brigade are putting out the fire. (6) He put a bait on the hook. (7) The sea i s rough when the wind blows. (8) Peter flew to Singapore to have a / on holiday . (9) He waved her hand to Lisa at the bus stop.

C an I say, (1) The vase was placed at the edge of the table. (2) Peter u sed the lawnmower to cut the weeds . (3) He hid behind the door . (4) The king and quuen li ve in the palace.

(9) Many passengers rest on the deck. This depends on what you want to say. Do you mean "rest" like "relax"? (YES, so isn't correct?)

P lease give me your comments, thanks!