1 . It takes a long time to ________ (使复原) the garden to its former beauty. (根据汉语提示单词拼写)

2 . Investigations have indicated that the virus was most likely to _______ (起源) from the seeds. (根据汉语提示单词拼写)

3 . The graph forces you _______ (realize) what we are doing to the ecology. (所给词的适当形式填空)

4 . It was time to make up my mind and _______ (抓住) the chance to improve myself. (根据汉语提示单词拼写)

5 . With spring around the comer, snow is beginning to _______ (融化). (根据汉语提示单词拼写)

6 . 我愿意承认我确实会犯错。
________________ that I do make mistakes.

7 . 他拒绝对形势作出评价。
He refused to _________ the situation.

9 . He found it very difficult to __________ (solve) the problem. (所给词的适当形式填空)

10 . 如果你有任何问题的话，不要犹豫来问我。
If you have any problems, ________________.