Mum, could I take off my mask today?It′s a little hot.
Well, I′m afraid we (wear) masks for some more time.
It often rains (heavy)in this season every year.
With the (develop)of science and technology,life is becoming much easier.
What about (practice)swimming this summer vacation?
His office is on the (nine)floor of the tall building.
The red roses (smell)sweet.