IT WAS HARD NOT TO START LAUGHING WHENSHE STARTED TO SINGING.C....

31. - 970 CAU HOI TRAC NGHIEM TIENG ANH HAY
970 CAU HOI TRAC NGHIEM TIENG ANH HAY

31.It was hard not to start laughing when

she started to singing.

c.that

d.repair

a.hard

b.laughing