MY SISTER IS VERY TIRED

7. - BAI TAP TIENG ANH LOP 9 TRAC NGHIEM TU BAI 1 10
Lớp 9 BAI TAP TIENG ANH LOP 9 TRAC NGHIEM TU BAI 1 10

7. My sister is very tired: …., she still has to cook dinner for the family.

a. so b. however c. and.