动词不定式专题练习
1. This company was the first ____ portable radios as well as cassette tape recorders in the world.
A. producingB. to produceC. having producedD. produced
2. The purpose of new technology is to make life easier, ____it more difficult.
A .not makingB. not makeC .not to makeD. nor to make
3. Helen had to shout ______above the sound of the music .
A .making herself hearB. to make herself hear
C. making herself heardD .to make herself heard
4. I don’t know whether yo ...