"______ is the main topic of this passage．

A:Variety of fixing method B:Techniques of position fixing C:Position fixing in coastal waters D:Certainty and uncertainty in the techniques being used

I think your bike _____.

A: needs to fix B: needs fixing C: needs to fixing D: needs fixed

Nowadays too many people are________ their eyes ________ tradE.

A:turning；on B:fixing；to C:turning；to D:fixing；at

The girl sat there with her attention____ on the book.

A: fixing B: to be fixing C: fixed D: fix

The girl sat there silent and still, with her eyes _______on the wall.

A: fixing B: fixed C: to be fixing D: to be fixed

The girl sat there quite silent and still with her eyes ____ on the wall.

A: fixing B: fixed C: to be fixing D: to be fixed

Roylott was sitting on a chair, with his eyes ______ the window.

A: fixing on B: were fixed to C: fixed on D: were fixing on

.He was deep in thought with his eyes______ on the ceiling.

A: fixed B: fixing C: fix D: to be fixing

He sat in the classroom with his eyes ______on the blackboarD.

A: fixed B: fixing C: were fixed D: were fixing