Clark.......climb trees
Not
No can
Not can
Can't

Present simple: 1.i usually  do my homework   after school.  2. tom always eat breakfast.  3. yesterday he didn't eat lance because he got up late.  4. my brother always takes a bus to get to work. 5. do you always get up at seven o'clock? 6. in yakutsk it's very cold and sunny. 7. computer are useful for learn anything.  8. every morning i get up at 11 o'clock. 9. every years we celebrate christmas.  10. every day i see you. present perfect: 1. the pupils have written a dictation. 2. my friend has helped me to solve a difficult. 3. good manners have gone out of fashion. 4. we have drunk water. 5. you have put the dishes on the table. 6. he has brought them some meat and vegetables.  7. she has taken the dirty plates from the tables. 8. she has opened a bo of chocolate. 9. i have translated a difficult article from german into russia.  10. she has told the truth.