---Would you go swimming with us? ---____, but I’m very busy now.
28.The university with two____campuses hasa student population of 50,000 in total.
27.Let' s move all the products into the hall and_____them in a proper order.
26.The whole class_____searching for the missing boy when the heavy rain poured down
25.The other day,I remember, ____I bought the dress, I met my boss in the shopping mail
24.----It's very cloudy and freezing cold. ----- Yes, I' m afraid it________be snowing tonight