Question

Be careful of (at, with, of) that man if you are doing business with him. He is capable ___of_______ (at, with, of) the meanest tricks

Answer 1

ʙᴇ ᴄᴀʀᴇғᴜʟ ᴡɪᴛʜ ᴛʜᴀᴛ ᴍᴀɴ ɪғ ʏᴏᴜ ᴀʀᴇ ᴅᴏɪɴɢ ʙᴜsɪɴᴇss ᴡɪᴛʜ ʜɪᴍ. ʜᴇ ɪs ᴄᴀᴘᴀʙʟᴇɴ ᴏғ ᴛʜᴇ ᴍᴇᴀɴᴇsᴛ ᴛʀɪᴄᴋs.

Answer 2

In ;At is correct answer ✔✔✔