Fire swept through a store at the corner of 4th street this morning ________ heavy damage.
| A．caused | B．has caused | C．causing | D．to cause |
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 |
"Nothing in this letter＿＿＿be considered as a license to use the artist’s personal possessions", the judge declared on the court.
| A．can | B．shall | C．must | D．may |