I-Put the verbs into the correct form .
1.If there were fewer cars on the road ,there (be)---------- less pollution.
2.If there was no fresh water in the world ,what (happen)----------.
3.If i can arange one week off work ,i (travel)---------- to Korea.
4.If he (not throw )----------litter in front of the railway station ,he wouldn't be fined now.
5.If you (be)---------- the president ,what would you do to help the environt ?
6.If you want to reduce the light ,i (turn off )----------some LED bulbs
7.I (never witness )----------any natural disater in my life.
8.The Kyoto protocol (sign )---------at 7.30 p.m and (last)----------two and a half hour .Don't be late .
9.The concert (begin )----------in the ear canal to protect the user's ears from loud noises.
II-Make question for the words in bold in each sentence.
1................................................................................... ?
->It's about 400km from Hanoi to Vinh.
2....................................................................................?
->We go the cinema three times a month .
3...................................................................................?
->Doing homework takes me 2 hours a day.
4....................................................................................?
->I often play badminton with Nga every afternoon.
5....................................................................................?
->Nam didn't go to school yesterday because he had a cold .
 

Giải phương trình sau :
\(\dfrac{7-3x}{12}+\dfrac{3}{4}=2\left(x-2\right)+\dfrac{5\left(5-2x\right)}{6}\)
 

Giải phương trình sau :
a,\(\dfrac{7-3x}{12}+\dfrac{5x+2}{7}=x+13\)
b,\(\dfrac{3\left(x+3\right)}{4}-\dfrac{1}{2}=\dfrac{5x+9}{7}-\dfrac{7x-9}{4}\)
c,\(\dfrac{2x+1}{3}-\dfrac{5x+2}{7}=x+3\)
d,\(\dfrac{2x-3}{3}-\dfrac{2x+3}{7}=\dfrac{4x+3}{5}-17\)