... , C , D 66 This is Nga school is big A His B Her C Your D She 67 That is house A Long B Long’s C he D Long is 68 Is Phong’s school the country ? A on B in C at D to 69 class ... vacation 65 .Saturday afternoon , we’re going to visit my grandparents in the countryside A On B In C For D At 66 Ba and his friends going to have a picnic near a lake A are B is C am D be 67 What ... D longest 166 The Mekong River is _than the Red River A long B longer C longest D the longer 167 Ho Chi Minh has a _of 3.5 million A city B capital C population D country 168 Hanoi is...