Answers of exercises

Robin: I think the waiter (forget) has forgot us. We (wait) have been waiting here for over half an hour and nobody (take) has taken our order yet.

Michele: I think you're right. He (walk) has walked by us at least twenty times. He probably thinks we (order, already) have already ordered.

Robin: Look at that couple over there, they (be, only) have only been here for five or ten minutes and they already have their food.

Michele: He must realize we (order, not) haven't ordered yet! We (sit) have been sitting here for over half an hour staring at him.

Robin: I don't know if he (notice, even) has even noticed us. He (run) has been running from table to table taking orders and serving food.

Michele: That's true, and he (look, not) hasn't looked in our direction once.