单项选择题

According to the passage the new telephone communication system ______.

A．has been put into actual use
B．was put into actual use in 1977
C．was put on experiment in 1977
D．had been repeatedly experimented on before 1977
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单项选择题
If you want to go out for lunch on Sunday, you can call up the number ______.
A．2785161 or 2706030
B．2706030 or 3562367
C．7364431 or 2785161
D．3562367 or 2785161
单项选择题
You don' t have to pay on Mondays if you go to ______.
A．Skyline Hotel
B．Landsdowne Park Shopping Center
C．New York Museum
D．Garden Restaurant
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