Affirmative (+) :
Example: He (wait) has been waiting on the train for two hours.
Example: They (study) have been studying English since two o'clock.
Negative (-) :
Example: Don't worry. We (not, wait) have not been waiting for you long.

1) The children (play) outside all day. They need to come inside for dinner.

2) We (read) history books at school. They are interesting.

3) The police (chase) the criminal since yesterday.

4) Lu Peng (make) bread all day. It smells so good!

5) The construction workers (build) the house all winter.

6) The roses (bloom) since spring.

7) I (not, sleep) very well lately. I think I need to get more exercise during the day. That would help.

8) The cut (bleed) for five minutes. I need to get a band aid.

9) The students (talk) about the Civil War in their history class this week. Next week they will be talking about World War I.

10) It (snow) all night. It will be difficult to get to work tomorrow morning.

11) The bird (fly) around our house all day. I think it (hunt) for something to eat.

12) Tessa and Brittan (not, use) their book bags this year. They (carry) their books in their arms.

13) Josh and I (spend) a lot of money on our vacation. I hope we have enough to get home!

14) William (smoke) a lot lately. He really needs to quit.

15) Akira (learn) about plants in school. She wants to be botanist when she grows up.