Грамматика: степени сравнения прилагательных и наречий. тест - вставить правильные в многоточие. 1. i… to make these experiments: a) could; b) must; c) had to. 2. the student… electrical parameters is my friend: a) measured; b) measuring; c) measure. 3. the… results were discussed at the conference: a) obtained; b) obtaining; c) obtain.