— There is little water left in the bottle, ______? — No, we need to buy some more before we run out of it.
Your father is sleeping. You'd better ___________.
Thank you ________ me with my English.
There ______ a football match next week.
While I ________to the programs, my mother ________outside.
It ______ the workers about 20 months to build the Huhang highspeed railway.