заполните пропусками глаголы в нужной форме to be1)measles...... an infections disease2)protruding bellies big heads

1) Measles is (Present Indefinite, singular) an infections disease. 2) Protruding bellies, big heads and crooked legs are (Present Indefinite, plural) the main symptoms of fever. 3) Yesterday his breathing was (Past Indefinite, singular) rapid and shallow.