43. Miss Hien is a……………….. She takes care of our school library. A. secretary B. shopkeeper C. book-keeper D. librarian 44. The books ……………………_ of the library are in English. A. on the back B. in the left C. at the back D. in the right 45. Please don’t make all that noise. My sister …………………… . A. sleeps B. sleeping C. is sleeping D. sleep 46. Quang learns ……………………_household appliances. A. to repair B. repairing C. repairs D. to repairs 47. What time is it? It’s 8:15 A. It’s fifteen to eight B. It’s eight past fifteen C. It’s a quarter past eight D. It’s a quarter to eight 48..When there is less work, he takes a day……………………and goes fishing.. A. on B. in C. off D. out 49.Students never have time to play a whole game because the recess is …………………… A. boring B. energetic C. short D. noisy 50. Are you good………………………….Math? A. on B. at C.in D. with 51. She should………………………..her homework before going out. A. do B. doing C. does D. to do