48. They often ……………………(visit) their parents on Saturday.49. ……….she ……………………(study) now?50. My and I always ……………………(go) to the countryside.51. He ……………………(not be) at home now.52. Hanh ……………………(not read) book at the moment.53. Our teacher usually ……………………(give) us many exercises.54. He often ……………………(catch) a train to work.55. The cat ……………………(catch) mouse.56. They ……………………(plant) trees overthere at the moment. 57. My old friend, Manh ……………………(write) to me twice a month.58. What she says ……………………(be) true.59. Where ………….. she ……………………(buy) her breakfast every morning?60. Bien ………….. often ……………………(not phone) to me.61. Mrs. Green always ……………………(take) a bus to work. But now he ……………………(drive) to work.62. Look! The ball ……………………(fall) down.63. He usually ……………………(water) the trees in the morning.64. She ……………………(not listen) to the radio now.65. The sun …………(rise) in the East and …………. (set) in the West.66. He ……………………(play) table tennis at the moment.67. Mo and Nguyen ……………………(sing) the same song now.68. They always ……………………(make) noise in the class.69. Hung …………. often ……………………(not go) camping in the summer.70. Hanh ……………………(not read) with the friends at the moment.71. …………Son ……………………(write) to their friends every summer holiday?72. What ………….you ………………..(listen) on the radio now?73. Listen! Someone ……………………(cry).74. Kien and Tuyen ……………………(be) good friends.75. She ……………………(go) to work by bus tomorrow.76. They ……………………(buy) some new pen yesterday.77. …………..you ……………………(see) the doctor next week.78. Son ……………………(not watch) TV last night.79. Mai and Nam ……………………(go) to the movie theater tomorrow evening.80. They ……………………(plant) trees a long this street next month