Molecular Shape Chem Question

I need help with three questions I would really appreciate the help.

1. The molecular shape resulting from an sp3 combination of bonding orbitals in which all four orbitals form chemical bonds is:

a. trigonal planar
b.angular
c.trigonal pyramidal
d. tetrahedral

2. The shape of an NH3 molecule is

a. angular
b.tetrahedral
c.trigonal pyramidal
d. tetrahedral

3. In which of the following compounds is sp2 hybridization used to explain the bonding

a. C2H4
b. H20
c. CH4
d. BH3

1 d
2 d ( SP3)
3 A (H2O,CH4,BH3 : sp3)