1.
Choose the correct sentences
[ঢাবিঃ গ ইউনিট (ব্যবসায় শিক্ষা) ২০১৩-২০১৪ : 2014]
1. Mary has been on a diet for three weeks.
1
2. Mary has been on a diet since three weeks.
2
3. Mary had been on a diet since three weeks.
3
4. Mary was on a diet since three weeks.
4
5. Mary is on a diet since three weeks.
5
