With teleportation, you disappear at a place, and then ............ in another seconds later. A. appears B. appeared C. reappear D. reappears

This is Linda's hat, and those shoes are .......... too. A. her B. hers C. our D. their

Which...... of transport do you think will be used in the future? A. mean B. meaning C. meanings D. means

With the Segway, the driver pulls the handle to go back or pushes it to go........ A. forward B. backward C. round D. fly

We try to make the future green by using vehicles or kinds of energy that are.............. A. environmentally friendly B. environment friendly C. environmentally friendship D. environmental friendly

The white cat is Helen's, and the black cat is ........... A. my B. I C. mine D. of mine

A jet pack doesn't....... a lot pf space. A. have B. bring C. take D. occur

The Segway, which is a ......... vehicle, will be a success. A. two-wheels B. two wheels C. two wheel D. two-wheel

We will use more... energy in the future. A. solar B. sunny C. sun D. sunlight

It will be ............ to ride a jet pack in bad weather because it doesn't have a roof. A. enjoyable B. pleasant C. unpleasant D. comfortable

People won't use flying cars ........... the year 2050. A. before B. after C. during D. until

Everyday over 1000 cars add to the city and the city of over 20 million people is getting more and more......... A. expensive B. famous C. difficult D. gridlocked