It’s never too old to learn. Mars began to learn English in his ____

We should not ________ and laugh at those who have no homes to shelter from the rain and wind. Instead, we should be sympathetic of them.[ ]

I couldn’t helpherthe newsshe failed in the examination.

The energy from the sun and wind is very cheap and it will never ____________.

What you’ve said sounds __________, but can we really solve the problem in that way?—It is worth a try. [ ]