I first met Lisa three years agoShe _____ at a shop at the time

Last night, I called at ______. [ ]

What do you think of Tom —He has been working very hard ______ heis an advanced worker

The technological advances of the twentiethcentury have been brought about analarming reduction of our natural resources.

It is said that by no means _____to get into this laboratory without Mr. Jackson’s permission. [ ]