1.      Hoa / buy / new bicycle / next week.

2.      No / hotel / expensive / than / one.

3.      If / weather / fine / tomorrow / class / go / picnic / river.

4.      I / friends / see / movie / many times.

5.      Ba / go / doctor yesterday / because / he / awful stomachache.

6.      your father / watch / TV / room / the moment ?

3x-5=-4

tính tổng x+y biết; x-5/12=3/8 và 223/669-y=11/88