1 . He ________ to the store to buy some groceries. (go) (所给词的适当形式填空)

2 . The dog ________ its tail. (chase) (所给词的适当形式填空)

3 . The cat ________ (sit) on the window sill. (所给词的适当形式填空)

4 . They ________ football in the park now. (play) (所给词的适当形式填空)

5 . The children ________ in the park now. (play) (所给词的适当形式填空)

6 . I hate those who are constantly ____________ (fantasy) about succeeding without effort. (所给词的适当形式填空)

7 . It is 7 o’clock now and my family _________ (be) eating supper. (所给词的适当形式填空)

8 . Doctors are _______ (concentrate) on understanding the disease better, trying to find the best treatment. (所给词的适当形式填空)

9 . The police________ (investigate) the accident right now. (所给词的适当形式填空)

10 . What worries me most is that he is always _______ (change) his mind. (所给词的适当形式填空)