20. Summer is the ______________ season of the year
A. Hot
B. Hottest
C. Hotter
D. most hot
21. The Untied States has a/an__________ of a round 250 million
A. population
B. Separation
C. Addition
D. Nation
23. Nguyen Du was a famous __________ in VietNam
A. Musician
B. Poet
C. Designer
D. Singer
24. Like Vie, Malaysia ____________ tropical climate
A. Enjoys
B. Covers
C. Makes
D. Comprises
25. My son _____________ English with his friends at the moment
A. Speaks
B. is speaking
C. Spoken
D. Will speak
26. My parents decided _______________ energy - saving bulbs to save electricity
A. use
B. used
C. using
D. to use