— Why? Tom, your shirt is so dirty!— Mum, I _____ my storeroom downstairs。
Alice’s father always brings her a nice gift ________ he returns home from his business trip.
Having walked in the desert for several days, they felt exhausted, but they had to find a pool before the water in the bottle ___________ .
It is very hot in Chongqing this summer. ________air-conditioners have been sold since the temperature is high.
Without electricity, people’s life ________ quite different today.
– I ____ to go for a walk. -- But I _____ going shopping.