50. We (call) ………………. them three times but still no one has answered the phone.
51. We (complete) ………………..the assignment before we (decide)…………….. to go out for the drink.
52. We (gain) ………………… much success so far.
53. We (prepare) …………. everything for the picnic before my father (return) …………. home from work.
54. Johnny (live) …………. With us since last month.
55. We (wait) ………………….. for her for ten hours but she hasn’t come
Loga
Sinh Học lớp 12
