B
buontaynhaura


1. You/know/who invent/ballpoint pen?
2. When/I/primary school/teacher/make/me/write/ fountain-pen
3. At/time/ I/ prefer/use/ballpoint pen
4. Ballpoint pens/ use/ to/very expensive/ when/first introduce/ Viet Nam
5. Father/ say/ ballpoint pen/ used/ cost/ some VND
6. Big/ French company/ make/ ballpoint pens/ call/ Bic
7. How many/ ballpoint pens/ produce/ world/each year?
8. Ballpoint pens/ use/widely/ than/ fountainpens
9. It/because/they/cheaper/ and/ convenient
10. It/ advisable/ that/ children/learn/ write/ not use/ ballpoint pens
2. When/I/primary school/teacher/make/me/write/ fountain-pen
3. At/time/ I/ prefer/use/ballpoint pen
4. Ballpoint pens/ use/ to/very expensive/ when/first introduce/ Viet Nam
5. Father/ say/ ballpoint pen/ used/ cost/ some VND
6. Big/ French company/ make/ ballpoint pens/ call/ Bic
7. How many/ ballpoint pens/ produce/ world/each year?
8. Ballpoint pens/ use/widely/ than/ fountainpens
9. It/because/they/cheaper/ and/ convenient
10. It/ advisable/ that/ children/learn/ write/ not use/ ballpoint pens