Test 2. This scientific theory ___ (to prove) to be false. Unless he ____ (to sell ) more, he won’t get much commission.

1. This scientific theory proved/ has proved to be false. 2. Unless he sells more, he won’t get much commission. 3. He is said to be the best surgeon in this country. I wish I had not tried to repair it. I only made it worse. 4. I am going to shop/ am shopping/ will shop for clothes with my elder sister on Sunday.