Every year thousands of tourists_____the mountain area to relax themselves．（ ）
| A． |
visited |
B． |
were visiting |
| C． |
visit |
D． |
have visited |
Every year thousands of tourists_____the mountain area to relax themselves．（ ）
| A． |
visited |
B． |
were visiting |
| C． |
visit |
D． |
have visited |
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