He can play football well , but he can’t play guitar.
_______, when Marx was already _______, he found it was important to study the situation in Russia, so he began to learn Russian.
Where is Linda? I can’t find her anywhere. She ______ the flowers in the garden.
If we ______ take environmental problems seriously, the earth _______ worse and worse.
---How do you like the talk show?---I think it’s __________, but some people think it’s so _________.
My coat costs little. What about ________?―_______ is expensive.