... OXFORD PRACTICE GRAMMAR TEST 21 PREPOSITIONS (UNITS 118-125) Test 21A Write the sentences correctly. ► I'll see you at Monday. ... Anna drove at the garage to get some -petrel. 7 We were sitting -in the back of the room. Test 21B Read Polly's postcard and write the missing words. Use one word only in each space. Sometimes ... Last night's disco went on very late, and today we slept (10)................. eleven. Test 21C Some of these sentences are correct, and some have a word which should not be there. If the...