Complete the sentences. Circle the right letter.1. What39;s the name of

Complete the sentences. Circle the right letter.1. What39;s the name of the waterfall? - I ...a) don39;t know ; b) didn39;t know ; c) haven39;t known2. What are you doing? - I ... the Internet. I need some information about Niagara Falls.a) browse ; b) am browsing ; c) browsed.3. Did you have a nice ctrip? - Yes , the weather ... fine . We swam and sunbathed every day. a) is ; b) was ; c) well be.4. ... you already ... the new film about Francis Drake? - Not, yeat. It is worth waching? a) do ... see ; b) did ... see ; c) Have ... seen.5. Jim , there ... a lot of homework to do. Let39;s begin with Maths. a) is ; b) are ; c) -6. They ... just from Karelia. Here is a souvenir for you. a) return ; b) returned ; c) have returned.7. Unfortunately, the explover ... his e-mail last nigth. a) doesn39;t check ; b) didn39;t check ; c) hasn39;t cheked.