TAKING A SHORT SLEEP IS NECESSARY WHEN ________.A. YOU FEEL SLEEPY...

4. - ĐỀ HGS ANH 9 TỈNH YÊN BÁI 2010
Tiếng Anh ĐỀ HGS ANH 9 TỈNH YÊN BÁI 2010
4. Taking a short sleep is necessary when ________.A. you feel sleepy and can not concentrate on studyingB. your eyes become red after studyingC. you can not lift your eyes away from your booksD. you want to go on after getting your concentration