1.How many times...you not to trust strangers?
a.have I told b.did I say c.had I told d.have I said
2. Our ancestors....bravely to...the country.
a.were fighting/guard b.fought/protect c.fougt/defend d.had fought/save
3.There was no...that he...hid mind at the last minute.
a.evidence/changes b.rumour/was changing c.clue/has been changing d.doubt/haf changed
4. It ...for days and she's feeling depressed.
a.had been pouring b.has been raining c.was flooding d.is snowing