---- What are you going to do this weekend? ---- I don’t know. I go to Beihai Park.
The old tower must be saved, _______ the cost.
_______ the children grew old, they became more and more _______ in science.
The enthusiastic physician takes part in all community services. ________, he often provides his medical service to the neighborhood.
In _______, the northerners are keen on dumplings while the southerners are fond of rice.
---Do you know what Tom does all day? ---I know he spends at least _______ time watching TV as he does spend doing his lessons.