Robert arrived without his book. He _____ it.
a. could have lost
b. should have lost
c. would have lost
d. will have lost
Other quiz: Grammar
Is the following sentence correct: the room is black.
How to use : Read the question carefully, then select one of the answers button.
Tips : If this page always shows the same questions, make sure you correct the question first by pressing the "check answer" button.