31. English is an........................and important subject. (interest) 32. In electronics they learn to repair................. appliances. (house) 33. The most popular................... at recess is talking. ( act) 34. Hoa is having a ................... check-up. (medicine) 35. The nurse wanted to know Nga’s height and ................. (weigh) 36. Hoa is the ……….. student in her school. (good ) 37. I’d like a nice.................orange. ( juice) 38. Edison’s most famous.................was thethe electronic bulb. (invent) 39. This dictionary is very .............. for you to learn english. (use) 40. I have .......... time to play than my friends. (little) 41. Catching the common cold is ..........for everybody. (please) giải thích nữa nhé cảm ơn