4.write full sentences: 3.i have cook dinner last night because mother ill. ........ 6.we collect stamps since we children. .......... 11.we not have holidays for two years. ............ 13. i eat this kind of food twice. ............... 14.they walk along the River Thames yet? ............... 16.so far this week there three accidents our street ............... 18.she promise she phone me after dinner. ........... 19.she find make pottery difficult ............... 20 i not think it difficult do volunteer work. ............. 21. i happy because i just receive your letter. ............... Mong các bạn giúp mik! hứa vote 5 sao và ctlhn