I can’t say which type of tea tastes better. It’s just a（an） ______ of personal preference.
| A．affair | B．problem | C．variety | D．matter |
__________ some medals came to live in the sea is not known.
| A．Which | B．Since | C．Although | D．How |
--Nancy is not coming tonight. --But she __________!
| A．promises | B．promised |
| C．will promise | D．had promised |
__________, we'll come to see you again.
| A．If time will permit | B．Time permits |
| C．Time permitting | D．Time permitted |
The rainbow is one of the most beautiful ___ in nature.
| A．phenomenon | B．phenomenas | C．phenomena | D．phenomenons |
After ___ absence, she found her hometown greatly changed.
| A．a year’s or two’s | B．a year or two | C．a year or two’s | D．one or two year’s |