The most popular activity at recess is ................
A. noisy
B. talking
C. basketball
D. study.
20: Activities at recess are the same all ............. the world.
A. in
B. on
C. over
D. of.
21: Hoa lives ......................... her uncle in Ha Noi.
A. At
B. in
C. on
D. with
1.B 2.C 3.D