....................

`1.` The children should be warned not to speak to strangers.

warn not to do st

`2.` The mystery can't be solved.

`3.` Traveller's cheques can be exchanged at most banks.

BD DTKT : S + DTKT + ( not ) + be + VpII + by O

`color{#1A1A74}{#}color{#3B3DA1}{M}color{#625DB9}{i}color{#838BED}{t}color{#FOD6FA}{s}color{#F9E8E2}{u}color{#FFDCE3}{k}color{#F5FCFF}{i}`