In 1492, Columbus_______ on one of the Bahama Islands, but he mistook it for an island of India. A lands B landed C has landed D had landed
Mr Jones called while you were out (neither of us knows this man). He was in bad temper.
There’s now a consensus nearly all over the world _____ we’re facing a fragile world peace.
People often find themselves caught in such a _____ as “whether…or not…”.
_____ the recent bad weather, the project is several weeks behind schedule.
—Have you got your exam papers? —Not yet. I guess they _____ at this moment.