英语难题.46.my father_______get up at 6:30 in the morning,but no

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英语难题.
46.my father_______get up at 6:30 in the morning,but now he gets up at 6:00.
A.was used to B.used to C.was used D.used
48.it’s very nice_________you to give me two tickets________NBA.
A.for…of B.of…for C.to…for D.of…to
53.no one knows________the UFOs will come again or not.
A.where B.if C.whether D.when
54.our class meeting is _______once a week.
A.had B.held C.taken place D.discussed
56.it’s impossible for us to win this game._________.Let’s try our best.
A.possible B.what a pity C.good luch D.sorry to hear that
57.water______changed into gas at a high temperature.
A.must be B.were C.can be D.should be
请从语法角度详解.

B(used to do过去常常be used to doing现在习惯于be used to do被用来)
D（it's +a. of sb.形容词是修饰人的品质而it's+a. for sb.是指对某人来说……NBA是对于ticket来说的）
C（因为有or not）
B（once a week用一般时态 hold the meeting）
C(根据前后语境)
A（客观事实）

my father get up at 7:30 in the morning always gets up at 6:30 in the morning. Tom gets up at 6:30 in the morning. she ______(get) up at 6:30 in the morning. My father always ()(醒来)up at six in the morning. He usually gets up at 6 o'clock in the morning ,but he had t My cousin,Jim,_____(get)up at 6 o'clock in the morning on we My grandfather u_____ gets up at 6:00in the morning.横线上应该填什么 i aiways（）up at six in the morning,but i （）up a little laf 英语选择题：She _____ up at six in the morning. 5道英语单选1._____ he _____ to the park at 6:30 in the morning?No in the morning,i get up at half past six.i brush my teeth at