— Someone is knocking at the door. It _________ be Tom.
— No, it ________ be him; he has gone to Sydney.
| A．must; can’t | B．might; mustn’t | C．may, neddn’t | D．can; mustn’t |
This information allows businessmen to keep of their list of goods by showing which items are being sold and how fast they are moving.
| A．sight | B．track | C．touch | D．sign |
In face of failure, it is the most important to keep up good state of mind.
| A．a; 不填 | B．不填; a | C．the; 不填 | D．不填; the |
Would you please explain＿＿＿you do to make .your students so interested in your lessons?
| A．what is it that | B．that what is it | C．that what it is | D．what it is that |
In the dark forests＿＿＿，some of which are large enough to hold several small towns.
| A．are lying many lakes | B．do many lakes lie |
| C．many lakes lie | D．lie many lakes |
After great efforts President Obama was elected to a second＿＿＿ of office
| A．turn | B．round | C．term | D．stage |