At times, worrying is a normal, ________ response to a difficult event or situation --- a loved one being injured in an accident, for example.
-----Have you been to New Zealand? -----No, I’d like to, _____.
He hurried to the booking office only______ that all the tickets had been sold out.
They urged that the library_______ open during the vacation.
The church clock began to _______ twelve.
-----Is this the first time you______ Chengdu? -----No. But the first time I______ here, the city wasn’t so beautiful