1. (2023七上·石家庄期中) 完形填空。

This afternoon, Alan and Frank are at Mike's home. 1 17:00, Mike and Alan go to play baseball. Frank can't play it, and he doesn't go with them. He2 some pens, erasers and rulers on the desk. "I can help them clean the desk, "Frank says. "The3 pen and the yellow eraser are Mike's, "he says. And he puts (放) them in Mike's 4 . What about the green5 and the yellow ruler? Frank puts them in Alan's schoolbag.

At 18:00, Mike and Alan come back（回来）. "I can't find my green pen. Do you see it?" Mike6 Alan.

"It's in my schoolbag. Is my black pen in7 schoolbag?" Alan asks. "Yes, it is. And your yellow eraser is in my schoolbag, 8 . "says Mike. "I'm sorry, boys, " Frank says.

"That's9 , Frank. We should thank you. 10 time, we can clean the desk together, "Mike says.