Раскройте скобки и поставьте глаголы в Present Perfect либо Past Perfect

Раскройте скобки и поставьте глаголы в Present Perfect либо Past Perfect 1) He looked at the man and understood he (to see) him somewhere before. 2) The secretary asked who (to break) her typewriter. 3) Look! Somebody (to break) my typewriter. 4) They (to buy) the pears in the market. 5) The children said they (to walk) 5 miles. 6) We wondered what they (to do) since we last met. 7) My friends are hungry because they (to have) nothing to eat since morning. 8) We just (to walk) in the park. 9) When my parents came home they saw that someone (to eat) the dinner. 10) Peter hoped there (to be) no bad news since Sunday.