用所给词的适当形式填空:
（1）My mother usually ______ (cook) at 5 o’clock.
（2）A: What _____ the twins _______on Sundays? (do)  
B: They often ______ (go) to the library.
（3）A: _______ Helen like _______ (swim)?  
B: Yes, she ______. Look, she __________ (swim) now.
（4）_______ you often fly a kite?  No, we _______. (did)
（5）She _______ (study) English well.
（7）______ he usually have a party at weekends?  No, he ______. (do)
（8）He ______ (want)to go to the park this weekend, but I have no time.
（9）Helen often ______ (go) to school by bus.
（10）Children often        (play) in the park on Sundays.
（11）We always        (have) lunch at school.
（12）What does your father          ? He            a nice telescope.(have)
（13）Mary often          in summer. Let’s go          in the river. (swim)
（14）-What          Wang Bing usually          after school? (do)
-He usually         (go) home and          (teach) his little brother.
（15）We          have any masks. Yang Ling          have any, too. (not)
（16）-What _____(do) this sign ____(mean)? –It ______(mean) “Danger”.