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1. Working in groups is beneficial.
It is beneficial to work in groups.
It + to be + adj + to V: thật...để làm gì
2. It took him almost a month to find out information for his travel book.
He spent almost a month finding out information for his travel book.
S + spend + time + Ving: tốn thời gian làm gì.
3. This piece of music is interesting to me.
I am interested in this piece of music.
Interested in + Ving/N: có hứng thú với điều gì
1. Which / be / biggest / city / Viet Nam /?
Which is the biggest city of Viet Nam ?
2. Minh / friends / be / going to / have / picnic / near / lake /.
Minh and his fiends are going to have a picnic near the lake.
3. Children / look / excited / while / play / games / during / break time /.
Children look very excited while they play games during the break time.
4. The air / the country / clean / than / the city /.
The air in the country is cleaner than the air in the city.
5. I / turn up / TV / because / want / hear / music / clear /.
I turn up the TV because I want to hear the music clearly.