The weather was bad, so we postponed the trip? We do a lot of activities in this summer

76.  The weather was bad, so we postponed the trip
=>We postponed the trip                                                                                                                   
77.  We do a lot of activities in this summer.
=>We take                                                                                                           
78.  It is wrong of us to throw rubbish.
=> We mustn’t                                                                                                                   
79.  Hoa is the best at English in her class
=>Nobody in Hoa’s class                                                                                                          
80.  She likes watching television.
=> She is interested