I have bought _____ useful reference books _____ I don’t know which one to start with.

We （ ） building the bridge by the end of next month.

He apologized _____ having to leave so early.

Little （ ） he knew about classical music, he pretended to be an expert on it.

_____ dictionary is enough for me.

The football player is hoping to（ ）to another team soon．

The department head insisted that he _____ absolute authority to regulate office work.

Since you are a little tired, you had better_____ a rest.

He （ ） yesterday morning, and would stay for three days.

Although _____ ten years ago， the machine is still in good condition.

Yon don’t have the right to blame me _____ being late， for I was busy typing your business invitations.

The patient’s progress was very encouraging as he could_____get out of bed without help.