Brian is gifted in writing music; he is very likely to beBeethoven.

In face of failure, it’s the most important to _______ a positive state of mind.

下列各句中，没有语病的一句是（ ）

The traffic on the main streets has a longer green signal than ________ on the small ones.

But for the sun to give us light and heat, nothing _______ on the earth. [ ]