Show how you would synthesize:
(a) 2 -phenylethanol by the addition of formaldehyde to a suitable Grignard reagent
(b) 2 -phenylethanol from a suitable alkene
(c) cyclohexylmethanol from an alkyl halide using an $\mathrm{S}_{\mathrm{N}} 2$ reaction
(d) 3-cyclohexylpropan-1-ol by the addition of ethylene oxide to a suitable Grignard reagent
(e) cis-pent-2-en-1-thiol from a suitable alkenyl halide
(f) 2,5 -dimethylhexane from a four-carbon alkyl halide