31. — If you don’t bring a birthday present to Lucy, you may.– Thank you for reminding me. Surely I’ll buy her one this evening.

Mary has changed a lot.–Yes.She _______short,but now she is very tall.

What time do you take a walk in the morning—______.

A computer ____________ think for itself; it must be told what to do.

No sooner ________in the distance______a storm began to pour