_____ this instrument should have put its work permit number on the box.
| A．Who checked | B．Whoever inspected |
| C．No matter who examined | D．Those who estimates |
When the holidays were drawing near, I asked my American friends ___ was the best way to travel in the United States.
| A．that | B．what | C．such | D．that |
He told me the news ____ the Queen would visit China the next month.
| A．that | B．which | C．when | D．when |
They lost their way in the forest and _____ made matters worse was that night began to fall.
| A．that | B．this | C．what | D．which |
I remember_______ this used to be a quiet village.
| A．how | B．when | C．where | D．what |
He made a promise_______ he would help me.
| A．what | B．when | C．that | D．which |