42.The Red River is the ........................ in Viet Nam. A.longer B. very long C. long D longest 43. There isnt ....................... milk in the bottle. A. an B. any C. a D. some 44. Id like some rice. Im ................................ . A. hungry B. hot C. thirsty D. full 45.My friends usually go ........................ in the river. A.swimming B. sailing C. camping D. walking 46.How much is a ..................... of toothpaste ? A.can B. bar C. tube D. box 47. Its very cold in the ................................. . A. summer B. fall C. spring D. winter 48. What about .................................... table tennis ? A. play B. playing C. plays D. to play 49. ..is a teacher . A.You B. She C. It D. I 50. .your book on page 16 , please . A. Close B. Read C. Open D. Listen