Pick the option that best completes the sentence (Q: 12-13)
[ঢাবিঃ গ ইউনিট (ব্যবসায় শিক্ষা) ২০১১-২০১২ : 2012]
1. looked with caution after
2. had looked cautiously before
3. was looked cautious when
4. looks cautious when
5. had looked cautiously when