UNIT 13TEST 1.

15. - BAI TAP TIENG ANH LOP 7 TRAC NGHIEM TU BAI 1 16
Lớp 7 BAI TAP TIENG ANH LOP 7 TRAC NGHIEM TU BAI 1 16

15. He is learning .. in the lake .

a. swim b. to swim c. swimming.